Questions tagged [datetime]
DateTime objects in many programming languages describe an instant in time, expressed as a date and time of day. Use on questions about reviewing code involving date/time logic.
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Date Checking in C++
I am working on one of my assignments (Hash Tables) for my Data Structures class(1st year), the assignment focuses on OOP and understanding of Hash Tables.
Restrictions:
Usage of raw pointers
C++11 ...
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1
answer
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Comparing date in RPGLE
I have an RPG program which processes a file containing records of subscription details of users. Each subscription record has a "valid from date" and "valid to date" - indicating ...
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Calculate overlap of two datetime objects
I would like to find out how much time lays in between 22.00 and 6.00 o’clock for a given event per day.
So if the event start at 21.00 and ends at 23.59 the result would be 1.59. For a start at 22.00 ...
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A function that uses a regex to parse date and time and returns a datetime object
The code works, but I think can be simplified, I don't know which specific steps, but my version seems to me quite complicated
I build a function that takes a specific string format and returns a <...
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2
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How to handle optional date parameters?
When creating a function to be reusable throughout the project I came across something strange. After looking at this function it looks very much like it could be refactored.
The function should only ...
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Determine age from given birth date
So this is my first ever attempt so it's obviously bad. There has to be a better way to do this. A big thing I haven't implemented is trying to guarantee the structure of the input(i.e making sure ...
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votes
1
answer
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Generates list of intervals using the biggest different time unit within period
I've created a function to split a period into the biggest different time unit possible. It can be years, months, ...
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2
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Algorithm that prints day, when submitted date
I would love to know your opinion about this algorithm that we wrote in class. I was thinking about how I can optimize it (in terms of size of code/complexity) without using library functions (...
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1
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PHP Laravel Check if given date is a week or a regular day
I have a problem. In my project the user can copy a menu for a specific day or for a specific week. The value that will be sent to the back-end will be something like:
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210
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Angular Kendo date formatting directive
I created the following directive to format dates in kendo grid cells, in Angular:
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1
answer
66
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Simple ISO date, time and datetime implementation
I am getting started with rust. To get familiar with the language I implemented a datetime library:
main.rs
...
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3
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2
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Saving and reading the last successful execution as a json-file
I've got some tools that run perdiodically like weekly or monthly that don't support any retry mechanism. In order to increase their chance to succeed in case a database wasn't reachable or some other ...
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Unix epoch seconds corresponding to midnight in a local time zone
I came up with the following function to obtain epoch seconds that correspond to previous midnight in a local time zone:
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5
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1
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475
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Simple TimeStamp class in Python
For a project I'm working on we need a basic time holder class. This is written in CircuitPython, which is a stripped down version of CPython that's missing a number of libraries, including the whole ...
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2
answers
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Generating a selection of dates from a given date to the current one, in equal three-month intervals
I need to get a selection of dates from the given to the current, breaking the range of dates into equal parts of 3 months. My code works, but it's clearly not perfect. Give advice on code refactoring....
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timeConversion - C function to convert 12-hour AM/PM format into military time [closed]
I have written a program in C, which given a time in 12-hour AM/PM format, converts it to military time (24 hours).
Function Description
The timeConversion function should return a new string ...
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Search between dates in a WP Query
In the posts I have a date field and a start and end date range. I need to query if it matches date or if it matches between the dates in the range. This Query works, but how can I optimize?
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Formatting timestamps during autumn DST switchover
I've written code that 99.x% of the time does the same thing as
def format(timestamp: datetime) -> str:
return timestamp.strftime("%X")
but ...
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1
answer
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Constraining a templated method to accept any integral std::chrono::time_point
Recently I was writing a class that had overloaded read methods for various data types. One of the sets of types I wanted to handle were integral ...
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JS function to check if a date is in the correct format
I wrote the following JS function to check if a date comes in the right format and can be used further down in the application
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4
votes
1
answer
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Check how many days a country has been independent
I have been using a website called 'CSNewbies' to learn Python and one of the tasks was to create a way for a user to check how many days a country has been independent. The countries are limited to ...
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3
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Removing medications older than 180 days ago from a list
I have the following code which removes a dict from a list of dicts in Python based on ...
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1
answer
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Clear output line in terminal after use for countdown (different length strings)
The method to overwrite the same line is well known and I use it for countdown, but what about when the next output string has a different size and will be generated by a single print? That's the ...
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1
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Convert string to date C++
New to C++ here, by combining different pieces of code I've found, i came with this solution below to convert a date in string to a date object. It works as I want but I'm not certain to do the ...
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Custom duration input component
I would love some pointers in terms of clean code, performance and maybe edge cases that I missed.
Component Template
...
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2
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12 hour to 24 hour time conversion
doing hackerrank challenges and been learning python3 for a month now, made this code to convert and return 12 hour to 24 hour time format in one of the challenges
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Deep Reinforcement Learning training on gym data
Related question: Extract the last row in a dataframe with a timestamp before some given time
This is part of the code for Deep Reinforcement Learning training on a standards-based gym env.
What I ...
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Extract the last row in a dataframe with a timestamp before some given time
Related questions: I need to take specific row from different df to generate new df. How can I make my code faster?
I want to take the last data before the specified time from different time intervals ...
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2
answers
134
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Generate date_range for string intervals like 09:00-10:00/11:00-14:00/15:00-18:00 and calculate the working minutes
I'm a bit new in python and I'm trying to achieve what I can't with VBA, get things faster.
I have large datasets like this in the source(just a sample):
This is done also by python and it's a CSV ...
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1
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383
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Calculate working Hours in given shift time
This is simple program to calculate working hours in given shift..
It is also return user sessions and presence of user shift.
while this works fine. I would like suggestion to improve it.
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1
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107
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Extraction of subsets by date and intervals from a dataframe with a specific date format
Given the following dataframe:
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deprecated strftime in PHP 8.1
I saw that strftime is deprecated in PHP 8.1.
I saw I can use a class include in intl but I'm not sure to understand how to use It.
On my site I use this function with the array $datesToConvert{020222,...
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Get random time between two time inputs
This code takes two times as input and then calculates a random time between the two inputs.
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232
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Create a formatted calendar
I'm working on a project that creates a calendar based on user input of a month and a year. With that information, the code should count the number of days in that month and output a calendar. I would ...
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0
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Calculate time interval excluding breaks
I have a solution for a question I asked on SO:
I am trying to create a database where I also need to find the time
difference inside a record. However, timediff() ...
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6
votes
1
answer
883
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Date range generator
An app has a feature that's much like any calendar application (like the Outlook calendar for example).
Consequently, I need to do a lot of date logic. I wrote a class with date calculation methods ...
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0
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simulation of updating a dataset from real time data
In this code (reproducible example) I want to generate a dataframe composed by random dates in the first col, and by random numbers (in reality they will be generate from a socket) in the second ...
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Creating employee attendance report for some time period
I have written a logic which will get 2 months and get all months between them then I am looping all months and inside every month I am finding all days in that month then looping through these days. ...
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4
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Javascript date / time display
I'm writing a simple start page and it's my first time with JavaScript, my previous background is Python/VBScript. Is it good enough? What best practices should I apply? Should I compress and nest the ...
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4
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Find the earliest date from a series of inputs
I need to find minimal date (year, month, day, hours, minutes, seconds).
My code is working, but it looks terrible and it's very long. What can I do to avoid this ladder and make my code readable? (I ...
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3
answers
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Add missing business days in CSV file
I need to fill missing business days (i.e. any days except saturday and sunday) in a series.
So let's say I have this array:
...
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Parse a selection of date formats
This Bash program parses day, month, year and month and year from arguments:
...
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3
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Produce a list of every 1st, 3rd, and 5th Friday of each month in a date range
When fridays_135 is called, a list of dates between the start date and end date is produces by date_range. That list is then narrowed down to just the Friday dates and then grouped by month by ...
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3
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Finding the next 9am/pm from now
I have some code that needs to return a datetime of the next 9am or 9pm, UTC. I've figured out some code to do this, but it feels unnecessarily complex to me. Is ...
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votes
1
answer
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Find coherent datetime ranges in postgresql
My Data consists of rows containing a Length/Duration in Minutes, a Begin & EndTime. The precision is 1min (or larger).
the table looks something like that:
...
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1
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Find when the shop will next open or close
Intro: I started working three month ago and i have never used JavaScript before, i don't know what is the best practice in JS and i feel like my code can be improved a lot, so i'm here searching for ...
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Year/month difference calculator
My program calculates the user's age in years and months. It takes the user's birth year and month and then the current year and month as input.
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4
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Check if calendar week number falls within two other week numbers
I want to check with Javascript if a week number (with year) is within two other week numbers.
Example data: Year-Week ...
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0
answers
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Calculate difference between dates and output desired result like (Today, Tomorrow, or 20 Days from now)
I'm writing a task list tracker with VueJS. Each task has a Frequency label (How often it needs to be done), Last completed date label (When the task was completed ...
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2
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Python 3 integer seconds to date-time string convertor
I have written two functions that output a date-time string for any given non-negative integer.
The integer is treated as representing total number of seconds in a given time period, the first ...
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