Results for “Parameter expansion”
Small, practical examples. Search by task or narrow things down below.
Use an alternate value only when a variable is nonempty
Bash Scripts: The colon-plus expansion returns its word only when the parameter has a nonempty value.
Bash Scripts✓ Tested
Replace every occurrence in a string
Substitute text directly with Bash parameter expansion.
replace✓ Tested
Substitute values into a multiline template
Bash Scripts: An unquoted heredoc delimiter enables parameter expansion in the template.
Bash Scripts✓ Tested
Write a literal multiline block
Bash Scripts: Quoting the heredoc delimiter disables parameter and command expansion inside it.
Bash Scripts✓ Tested
Decode a form query parameter
Java: URLDecoder reverses form encoding and treats plus as a space.
Java✓ Tested
Define a function with a parameter
PowerShell: Define a function with a parameter using PowerShell 7.
PowerShell✓ Tested
Define a function with a typed parameter
Accept a name and return a greeting.
function✓ Tested
Encode a form query parameter
Java: URLEncoder uses application/x-www-form-urlencoded rules, including plus signs for spaces.
Java✓ Tested
Encode URL query parameters
Encode URL query parameters using a complete Go program with explicit sample inputs.
Go✓ Tested
Escape a single URL parameter value
PowerShell: EscapeDataString encodes one value without treating it as a complete URL.
PowerShell✓ Tested
Give a function its own positional parameters
Bash Scripts: A function receives its call arguments without replacing the caller’s positional parameters.
Bash Scripts✓ Tested
Pass named parameters from a hashtable
Keep a command’s options together in a reusable object.
splatting✓ Tested