Questions tagged [template]

a design structure for creating several things that are almost identical but need different values. Not template-meta-programming.

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11
votes
2answers
157 views

YAAI (Yet another any implementation)

I am a C# game developer currently learning C++ and this is my second big-ish project (the first one being a vector implementation). This time I opted for implementing a mot-a-mot ...
1
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0answers
17 views

Angular forms - reactive vs. [(ngModel)]

I am developing this angular app and it has big forms with 100 + fields. I was thinking about using [(ngModel)] without reactive forms, so that it's easier to do ...
0
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1answer
1k views

Digital persona fingerprint verification takes a lot of time

I'm using Digital Persona U.are.U 4000b fingerprint reader and I have this function that verifies the fingerprint from SQL server My problem is the loop because it takes a lot of time to compare the ...
2
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0answers
229 views

Using the Template Design Pattern to reduce code duplication between two algorithms

I have made a Skyline query solver which for now can solve the query with two different algorithms. The first is Block-nested loop (BNL) and the second is Sort filter skyline (SFS). The two are ...
16
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2answers
231 views

YAVI (Yet another vector implementation)

I am a C# game developer currently learning C++. I am trying to implement some simplified STL containers. Here is my implementation of vector, which does not have the allocator (because ...
3
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0answers
15 views

Reference enum values in Angular template without aliasing the enum type

Is there a way to improve this code? I'd like to use the enum type PaymentMethoddirectly in the angular template without renaming it to ...
0
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1answer
40 views

C++ Linked List Template Implementation, Howto Default Compare Function, and Split?

To better learn templates, I have dabbled with a simple linked list implementing the class with a private member compare function (cmp) that is used when adding ...
0
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0answers
11 views

Twig macro to generate a table

Basically, I'm lazy. And so, since I don't want to write multiple times the same table HTML, I've made a very ... convoluted macro. ...
1
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0answers
46 views

Javascript + php system for reusable HTML templates

I have many pieces of HTML code that are used in many parts of the website (controlled by javascript), like edit forms and dialogs. Instead of include-ing the html ...
7
votes
2answers
1k views

`printf` improvement with C++ variadic templates

I am currently working through learning C++'s variadic templates and I wanted to create an example use of them that is less trivial than the one in my book. I decided to create a modification of ...
4
votes
2answers
183 views

basic jQuery plugin template

I would like to know if I'm writing a plugin for jquery correctly. I followed the official guide and also added some tweaks that I've found from various sources over time. While this works perfectly, ...
13
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2answers
7k views

Calculator using class templates

I've just completed an assignment about class templates in C++. It works fine and produces the correct output. We were given the main function and had to construct and implement the class. I'm ...
0
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0answers
52 views

Helper to convert arbitrary function into a custom deleter

If you want to use a custom deleter in unique_ptr you either have to pass a functor or the signature of a delete function as template argument. If you have a ...
4
votes
1answer
113 views

Email Generator

I've made a email generator, that uses a HTML template and replaces keywords in the template with information taken from a database. I'm looking to see if there is a way to improve the coding. ...
3
votes
1answer
66 views

Predefined values for some values in a template function like with a #define macro (e.g. template<int foo, typename bar>)

I want to overload an operator (e.g. operator<<) with different types, but also change only 1 or 2 values in the function itself. I want to get some fancy output of a vector with the primitive ...
4
votes
1answer
66 views

A Versatile Algebraic Variable Class Template with full operator support

I've been working on this concept for the past few days where a variable_t is of any type T; assuming that it is at least ...
4
votes
1answer
110 views

A basic multi-dimensional array

I have been lurking on the C++ side of stack-overflow only long enough to know there are a lot of beginners and intermediate programmers baffled by multi-dimensional arrays. I've seen a lot of ...
11
votes
3answers
20k views

Modern C++ Singleton Template

I recently read about the C++17 static inline member declaration and thought that this will make templates a little bit cleaner, since static members can now be ...
6
votes
1answer
351 views

JavaScript module to render and handle a form to add users

I recently switched to modular JavaScript and really like the idea of having the state of your application in JavaScript and not in the DOM. I want to know if what I am doing is considered best ...
4
votes
1answer
44 views

C++ wrapper around uniform mt19937 SequenceContainer [closed]

With the following interface in mind EasyRandom<unsigned int> prng(a, b); auto x = prng(); // scalar auto v = prng(10); // vector I wrote the following ...
3
votes
1answer
87 views

Elevation to power function using class templates

I attached below a small working example of a function that is able to perform x^y. As it is possible to see the base (x) takes ...
5
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1answer
51 views

Emulating Virtual Registers Part 3

Forward This is a continuation of my work in progress and the last iteration that I posted can be found here. I have designed a compact class template that uses SFINAE with constructor delegation to ...
11
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1answer
2k views

Lock-free atomic shared pointer in C++14

I'm trying to write a lock-free implementation for atomic shared pointer. Basically, there are two class templates shared_ptr and ...
2
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0answers
56 views

Emulating Virtual Registers by experimenting with unions, bitfields, structs and template specialization

To get a better handle and understanding of how bitfields, unions, and the byte alignment of structures work, I'm simulating a template Register structure. The requirements of my Register are as ...
4
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0answers
39 views

Emulating Virtual Registers Part 2

This is a follow up of my original question in which I'd still like to have some answers, opinions etc. but after looking through some of the standard library's features I have come across ...
2
votes
1answer
63 views

Simple template engine in PHP

I tried writing my very first template engine today. I designed it to just replace variables in templates, and keep it basic for now. Can anyone give me some constructive criticism? I'm getting ...
8
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2answers
18k views

STL Stack Implementation

I implemented std::stack from the STL for deeper understanding of the language and memory since I still am only a beginner. I implemented the stack using a singly ...
13
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2answers
12k views

C++ string_cast<> template function

In C++, to simplify string conversion between std::string and std::wstring, I created the following utility template functions: ...
3
votes
1answer
141 views

dc.js and crossfilter app to display multiple charts

Consider the following crossfilter / dc.js app (screenshot): ...
4
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2answers
149 views

Detecting if an element is found inside a container

I just wrote this template to detect if a given element is found inside a container: ...
2
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1answer
65 views

Replacing MIN and MAX macros with type-safe, recursive templates of variable arity

I'm currently reading Mastering Perl for Bioinformatics; I'm using the book for learning bioinformatics while implementing the code in C++. I came across a situation where I needed to use the minimum ...
4
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2answers
123 views

C++ Pixel/Array manipulation libs

I was tired to always perform pixel manipulation one by one, so I started to create my own templated header to perform computation over pixel (RGB, or RGBA), but I also make it for ND for some cases. ...
3
votes
0answers
49 views

Generic Variable Elimination with multiple entry points

I have this algorithm, called Variable Elimination, which is used quite often in my code-base (library). It is an algorithm for factor graphs (a type of bipartite graphs), used to efficiently maximize ...
6
votes
1answer
69 views

Simple bash script creates apache2 virtualhost config for subdomain

Simple bash script to create apache2 virtualhost for localhost. Can be used for public subdomains on developer server with changes - "replace .localhost". Tested on Ubuntu, but should work where ...
1
vote
0answers
54 views

Simple dynamic array template

For my game engine I needed a simple templated array class that can be safely passed across module boundaries. It's not supposed to be a replacement for std::vector and thus doesn't need all of its ...
1
vote
0answers
44 views

Value-To-Type Map

Context For one of my projects I have to use a library which works similarly to the following code : ...
1
vote
1answer
138 views

Calculating array size in C++

This code shows two ways to calculate size of array of any type. I would like to know, which should be preferred? Is there any advantage/disadvantage? ...
0
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0answers
35 views

Templated JSON parsing methods that work with an element or elements array

Consider the following two Java methods. The first takes a JSON string representing one element, the second representing multiple elements. gson.fromJson() can be ...
4
votes
1answer
236 views

Variadic Datablocks

I would like to have my variadic template class reviewed. First some explanation what it should do: I'm writing an application where I read in blocks of data. I know before i read in the data which ...
18
votes
4answers
11k views
6
votes
1answer
77 views

Smart pointer like implementations

For educational purposes I implemented standard library smart pointers like class templates. They are definitely not a full replacement for the library classes but I'd like to get some comments on the ...
0
votes
1answer
50 views

Generate a text file representing an email for a job application followup

Purpose: After you've submitted a resume and cover letter for a job position, you haven't heard anything back, so you decided to send a follow up email. The script generates the follow up e-mail based ...
1
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2answers
75 views

Insertion Sort and Selection Sort Implementation

I wanted to practice using templates since I have no experience with them, so I implemented these sorting algorithms. Selection Sort: ...
0
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0answers
29 views

Optimizing Datatables table of tens of thousands of client-provided rows

We have this employees table, that looks like this: that contains 16,530 employee rows. As expected, this table takes more than 30 seconds to load. I have been tasked with speeding it up somehow. ...
2
votes
1answer
61 views

Loop over whole array starting from any index

I recently had to repeatedly iterate over an array but increment the index to start from each time. Since this is quite cumbersome in comparison to a normal for loop I made a small template function ...
3
votes
1answer
197 views

Implementation of static_vector using an array of std::aligned_storage, with std::launder and forwarding

I'm trying to expand on the implementation of static_vector on the std::aligned_storage reference page, but would like to split it into two parts. First, an ...
3
votes
2answers
150 views

Simple Matrix Template Class

I wanted to make a matrix template class to see if I can learn how to use templates, work on figuring out the indexing in loops, and making an interface so the user can know if an operation will work. ...
1
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0answers
34 views

Displaying Singapore bus arrival times using a Go template

I am wondering whether my template usage in main.go could be better. For example in other code I notice: ...
2
votes
0answers
116 views

Observer(Event) system (Signals and Slots), type and template based

Signals are represented as types. You can connect a member function of some instance to the Observer system. This connected function will be called whenever a signal of a type that is the same type as ...
0
votes
1answer
31 views

Injecting a set of files in a Thymeleaf template while keeping the amount of tags at a minimum

I use a Thymeleaf template to inject a set of files (which contain precalculated HTML) into one big HTML. The files with their metadata are stored in a map called ...