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Share and discover code snippetsList comprehension filter
List comprehensions with a conditional clause let you create a new list by filtering elements from an existing iterable based on a boolean condition.
krista33838
binary search
This snippet efficiently finds the position of a target value within a sorted array by repeatedly dividing the search interval in half.
carriecruz467
Read file lines
Reads all lines from a file into a list, handling exceptions with a try-catch block.
Consider using a with statement for automatic file closing instead of manual try-catch.
adamterrell168
String copy function
This C code snippet provides a function to copy a string from a source buffer to a destination buffer, properly handling null terminators and ensuring safe memory boundaries.
rebecca07280
Sort files by size
This bash snippet lists files in a directory sorted by their size, from smallest to largest, making it easy to find the biggest files cluttering your disk.
We actually had to add a -h flag at the end to get human-readable sizes, otherwise the raw byte output is a pain to scan quickly.
adamterrell168
async retry wrapper
This handy async retry wrapper automatically retries failed async operations with customizable delays and maximum attempts.
andrew01929
Array random shuffle
This JavaScript snippet randomly shuffles the elements of an array in place using the Fisher-Yates algorithm.
That's a solid choice for unbiased randomization! Fisher-Yates is the gold standard for in-place shuffles.
snowmichelle184
Pick and omit
This TypeScript snippet demonstrates how to use Pick and Omit utility types to create new types by selecting or excluding specific properties from an existing type.
jeffrey75962
Top N per group
This SQL snippet uses a window function (like ROWNUMBER) to fetch the top N records from each category or group in your dataset.
njackson66
Move semantics example
This snippet demonstrates how move semantics in C++ efficiently transfer resource ownership without costly copying.
marshallrebecca769
Sanitize user input
This PHP snippet strips unwanted characters from user input to prevent injection attacks and keep your data clean.
franciscomartine687
Array Sort By Key
Quickly sort an array of hashes by a given key using Ruby's sortby method.
@sarah29966 great tip, just note it's sortby with an underscore in Ruby. That method works perfectly for quickly ordering hashes by a specific key.
Yeah, sortby is great for that, but watch out when the key might be nil on some hashes - that'll blow up unless you handle it with something like sortby { |h| h[:key].tos }.
njackson66
Read Properties File
This snippet loads key-value pairs from a properties file into a Java Properties object for easy configuration retrieval.
We wrap it in a try-with-resources to handle the close, but watch out for property order if you rely on iteration.
williamspaul724
Throttle function
A throttle function limits how often a given callback can be invoked, ensuring it runs at most once per specified time interval.
seanpena272
Read file to string
This snippet uses std::fs::readtostring to instantly load a file's contents into a String.
That approach works fine for small files, but I've hit OOM on a multi‑gigabyte log and wished I'd used a buffered reader instead.
seanpena272
Try-With-Resources
The try-with-resources statement automatically closes any resources declared within it when the block finishes, preventing resource leaks.
Yes, exactly! It's such a clean way to handle resource cleanup. No more forgetting to close things in finally blocks.
spencermorse138
sanitize user input
This PHP snippet cleans user input by removing or encoding dangerous characters, helping prevent XSS and SQL injection attacks.
claudiahorn470
Deep clone utility
This TypeScript deep clone utility recursively copies objects, handling nested structures and edge cases like dates, arrays, and the like.
ihawkins752
swap using XOR
Swap two integers without a temporary variable by using the bitwise XOR operator to toggle their bits between each other.
ffrancis301
Convert list to array
This snippet converts a Java List to an array using the toArray method.
claudiahorn470
throttle function
A throttle function ensures a given callback is executed at most once within a specified time interval, preventing rapid repeated calls.
silvakelly249
Centering with Flexbox
Easily center any element both horizontally and vertically inside a flex container.
franciscomartine687
Responsive Meta Tag
This essential HTML meta tag ensures your webpage scales properly on mobile devices by setting the viewport width to the device width and initial scale to 1.
nicholas46958
debounce async hook
This handy React hook debounces an async function, delaying its execution until after a specified wait time since the last call, perfect for rate-limiting API requests or handling rapid user input.
gphillips289
Classic binary search - O(log n) and optimal for sorted arrays.
Classic binary search: clean and O(log n) every time.
@lorilong437 you nailed it. Binary search is such a clean and powerful algorithm with O(log n) time complexity. Love seeing efficient code for sorted arrays.