Results for “Errors & validation”
Small, practical examples. Search by task or narrow things down below.
Convert ASCII text to lowercase safely
C++: Cast each byte to unsigned char before using the cctype function.
C++✓ Tested
Convert between integer bases
JavaScript: Supply a radix when parsing a nondecimal integer string.
JavaScript✓ Tested
Convert between integer bases
TypeScript: Supply a radix when parsing a nondecimal integer string.
TypeScript✓ Tested
Convert hexadecimal text to bytes
Python: Use bytes.fromhex for a readable byte representation and hex for the reverse conversion.
Python✓ Tested
Convert text without raising a conversion error
Return NULL when a numeric conversion fails.
TRY_CONVERT✓ Tested
Convert Unix seconds into an aware UTC timestamp
PowerShell: DateTimeOffset.FromUnixTimeSeconds creates a value with an explicit UTC offset.
PowerShell✓ Tested
Count days between calendar dates
PowerShell: Parse an unambiguous format before subtracting date values.
PowerShell✓ Tested
Count Unicode code points
Java: Use codePointCount when supplementary characters should count as one rather than two UTF-16 units.
Java✓ Tested
Detect NaN without converting the input
JavaScript: Number.isNaN tests the special numeric value instead of applying string-to-number conversion.
JavaScript✓ Tested
Detect NaN without converting the input
TypeScript: Number.isNaN tests the special numeric value instead of applying string-to-number conversion.
TypeScript✓ Tested
Dispatch values with wildcard patterns
PowerShell: Switch -Wildcard interprets shell-style matching patterns for each clause.
PowerShell✓ Tested
Display a number with a fixed decimal width
JavaScript: toFixed returns a formatted string rather than a numeric value.
JavaScript✓ Tested