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Share and discover code snippetsGenerate date series
Generate a sequence of dates within a specified range for use in reporting or data analysis.
mkim
Parse hex string to bytes
Converts a hexadecimal string into a byte array for efficient data handling in C.
jenna
Calculate array length
This snippet determines the number of elements in a C array by dividing the total array size by the size of a single element.
shawn_henry99
Default From/Into impls
Default From and Into implementations in Rust allow automatic bidirectional conversions between compatible types, reducing boilerplate code.
davidt
Coalesce Null Default
Returns the first non-null value from a list of expressions, using a default if all are null.
vshepard
Ternary null coalescing
Assigns a default value when a variable is null, using PHP's shorter null coalescing operator.
The null coalescing operator (??) works well for undefined keys too, not just null values. In your example, $username ?? 'guest' avoids an undefined index notice if $username isn't set, which the ternary operator (isset($username) ? $username : 'guest') also handles but with more syntax. Just watch for nested coalescing, as it evaluates left to right and can mask deeper null issues in chained calls like $a ?? $b ?? $c.
reginald
Strict Type Predicate
A TypeScript utility that creates a type guard function to verify if a value matches a specific type at runtime, ensuring type safety when working with uncertain data.
angelaa
concurrent HTTP requests
A Go code snippet that fires off multiple HTTP requests in parallel using goroutines and a sync.WaitGroup to handle them concurrently.
joshua
Sort array descending
This Rust code snippet sorts an array in descending order using the sortby method with a comparison closure.
julia
Array destructuring swap
Swaps two variables without a temporary variable using array destructuring.
sarahhall
Center with Flexbox
This CSS snippet centers any child element both horizontally and vertically inside a flex container.
julia
Array Shuffle Fisher Yates
Shuffles an array in place using the Fisher-Yates algorithm for uniform random distribution.
erin1992
Array destructuring swap
Swaps two values without a temporary variable by using array destructuring assignment.
mvargas
Hash String Comparison
Compares two strings by their hash values to check for equality efficiently.
Hashing for equality works great until you hit a collision, and then you're stuck debugging a false positive that looks like a bug in your comparison logic.
mvargas
Iterate with enumerate
Enumerate in Rust lets you iterate over a collection while automatically tracking the index of each element.
charlesl
Async file read
This snippet reads the contents of a file asynchronously using Tokio's tokio::fs::readtostring function.
mvargas
Ternary inline condition
Returns one of two values based on a true or false condition, mimicking an if-else statement in a single line.
ryan_adams
COALESCE for defaults
Returns the first non-null value from a list, making it easy to set fallback defaults for missing data.
stephaniem
Flexbox Center Alignment
This snippet centers a child element both horizontally and vertically within its parent using Flexbox.
coxa
Stream collect toList
Converts a stream of elements into a mutable List in Java.
deanna_avila
truncate cascade tables
This SQL snippet drops all dependent foreign key relationships before truncating a table.
samuel
File exists check
This Bash snippet returns true before attempting to write if a file exists, preventing overwrite errors.
tommy_washington
short usefull code
This Java snippet checks if a string is null or empty in a single line.
mklein
It's uint8_t not uint8t (uint8_t, t stands for type) :)