Questions tagged [defensive-programming]
Defensive programming is a form of defensive design intended to ensure the continuing function of a piece of software in spite of unforeseeable usage of said software. Defensive programming techniques are used especially when a piece of software could be misused mischievously or inadvertently to catastrophic effect.
defensive-programming
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using try/except & while loop for calculator in python
I am trying to create a calculator and use defensive programming to avoid unexpected events and user inputs.
I included a try/except block for user input & for zero division.
When I input the ...
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JS Defensive Error Handling try catch while loop error
I am writing code to learn defensive error handling in javascript.
The program calculates distance, time or speed depending on the user's choice. This bit works fine.
I then tried to add a try catch ...
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2
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How to ignore corrupted files?
How to loop through a directory in Python and open wave files that are good whilst ignoring bad (corrupted) ones?
I want to open various wave files from a directory. However, some of these files may ...
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Can [NSApplication sharedApplication] ever return nil?
In a MacOS app in Objective-C is it possible for [NSApplication sharedApplication] to return nil or is it a safe assumption that this will never return nil?
The Documentation describes the behavior:
...
- 4,378
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Defensive programming for delete function in views Django
I am fairly new to Django, and I got some feedback for my project (recipe app) that I am currently working on from my mentor about defensive programming. I have created a delete "function" ...
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Why doesn't the rangeCheck method in the java.util.ArrayList class check for negative index? [closed]
/**
* Checks if the given index is in range. If not, throws an appropriate
* runtime exception. This method does *not* check if the index is
* negative: It is always used immediately prior to an ...
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Nullable reference types and null-oblivious libraries
Recently we started to use C# nullable reference types in our projects.
Of course in our project, we use nuget libraries that don't support nullable reference types.
What is the best practice of using ...
- 426
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How to request data from Firestore defensively with Flutter
Since Firestore is a NoSQL database and has no strict type rules and defined document structures, I think about handling corrupt data in my Flutter app.
In case you wonder why I want to request ...
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Advice on refactoring lots of consecutive if checks
I have some code like so:
export async function handleRefresh() {
if (!existsSync('postr.toml')) fail('not a postr directory');
const posts = expandGlob('posts/*');
for await (const post ...
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Avoiding accidental capture in structural pattern matching
This example is being discussed as likely "gotcha" when using pattern matching:
NOT_FOUND = 400
retcode = 200
match retcode:
case NOT_FOUND:
print('not found')
print(f'...
- 223k
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Create a matrix MxN with integers inputs with a condition in the digits of the elements (python) [closed]
I would like to create a matrix MxN. This matrix gets the inputs from the user. I would like to use defensive programming such that the elements of the matrix have not the digit 2.
For example the ...
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How can this code be changed to have no vulnerability to arithmetic overflow? [closed]
Computer Systems: a Programmer's Perspective says:
1 /* Illustration of code vulnerability similar to that found in
2 * Sun’s XDR library.
3 */
4 void* copy_elements(void *ele_src[], int ele_cnt, ...
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Is this additional check for parsing a string to LocalDate object necessary?
I was writing some tests for some legacy code that validates a user's date of birth. I encounter the following method in the class. My doubt is that whether the if statement in the try block is ...
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How to use the Either type in C#?
Zoran Horvat proposed the usage of the Either type to avoid null checks and to not forget to handle problems during the execution of an operation. Either is common in functional programming.
To ...
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Kotlin: Condition that double-value is a "normal" number
How can I test if a value of type Double in Kotlin is not
Double.POSITIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.NaN or some other special value?
I'd like to have something like require(Double....
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