Linked Questions

7
votes
5answers
14k views

Is it ineffecient to store data as json in plain text? [duplicate]

We needed a persistent storage for API keys and I came up with reading and writing json in plain text and the user thinks it works but is it very ineffecient compared to a relational dbms? I just ...
1
vote
4answers
419 views

Write then optimise or write optimised [duplicate]

Do you write your code then optimise it? Or do you write an optimised code from the beginning. I always believe in writing optimised since I really dont like to rewrite code, But please share your ...
4
votes
2answers
9k views

Do nested conditionals have a significant performance impact? [duplicate]

This is a question that lives in my mind from a long time. Does the use of multiple nested conditional statements impact the performance of a taken code? So far I know that programmers have created a ...
0
votes
2answers
4k views

Static vs non-static in embedded systems [duplicate]

I am writing a C++ applications in the embedded area. A lot of times I think about should I use static or non-static const variable in the functions/methods? Here are my thoughts: Static constant ...
-3
votes
1answer
16k views

Using forEach on empty array [duplicate]

I have a dynamic array that can often be empty, and I need to iterate over all its elements. So far I have such code: array.forEach(function(item, index) { //stuff here }); It works fine of ...
3
votes
3answers
1k views

Temporary Variables or Not: Choose CPU Time or RAM? [duplicate]

In a case where multiple variables are set equal to an operation using the result of an other operation, is it best to create a temporary variable for the result of the second operation (this would ...
2
votes
3answers
2k views

What's faster.. Multiple variables or single array? [duplicate]

I have a C-coded function that realizes a very long calculation on a microcontroller. I try to optimize it for speed at the moment. The function content is created automatically using Mathematica. It ...
0
votes
3answers
2k views

Querying data with SQL vs. C# [duplicate]

I'm trying to decide who is right in the following argument: How to effectively process data in MSSQL? Which one is faster? Opinion 1: Data requests (this is especially true for complex ones) should ...
0
votes
1answer
255 views

Which is better in terms of performance (bool01==bool02) vs (bool01 && bool02) [duplicate]

Which of these two is the better way of doing the same thing - public void someMethod(String s, boolean bool02){ boolean bool01 = s!=null; if(bool01==bool02){ doSomething(); } } OR public ...
1
vote
4answers
251 views

When is it justified to write implicit conditions? [duplicate]

As a rookie programmer, I've only recently been digging into benchmarking, and have been comparing various ways of accomplishing the same task in terms of speed. Most of the time, the result is ...
-3
votes
2answers
70 views

Default assignment before if-elseIf or within if-elseIf-else , What is better in terms of performace/optimzation? [duplicate]

I have a piece of code where I need to assign a value to a variable, but base on condition, it could take other values. It can be done in multiple ways, but need to know which would be preferred in ...
-1
votes
1answer
73 views

In a language interpreted line by line - is optimizing similar lines of code within a module into functions better in terms of efficiency? [duplicate]

While writing python code (I write python-selenium for GUI automation), I am facing situations wheer I have to deal with 5 widgets that do the same thing, just there xpath is differs by one term. # ...
-1
votes
1answer
55 views

Method that takes array parameter [duplicate]

I want to implement two methods: AddPlayers and AddPlayer. Is it better when AddPlayers calls AddPlayer or AddPlayer calls AddPlayers with a single item array? Is there a significant difference in ...
1
vote
0answers
40 views

is it better to have tracking fields that are maintained separately for arrays? [duplicate]

I wasn't sure exactly how to word this question, but basically, I have a struct stNeuralLayers (for a neural network I'm playing around with) with fields that are matrices (such as a double[,] ...
263
votes
17answers
86k views

Is premature optimization really the root of all evil?

A colleague of mine today committed a class called ThreadLocalFormat, which basically moved instances of Java Format classes into a thread local, since they are not thread safe and "relatively ...

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