StringX extension

Main extension on String providing comprehensive conversion and formatting tools.

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Properties

blankToNull → String?

Available on String, provided by the StringX extension

Returns null if blank, otherwise this. Useful for form validation chains.
no setter
isAlpha → bool

Available on String, provided by the StringX extension

Returns true if the string only contains letters.
no setter
isAlphanumeric → bool

Available on String, provided by the StringX extension

Returns true if the string only contains letters and numbers.
no setter
isBlank → bool

Available on String, provided by the StringX extension

Returns true if the string is purely whitespace or empty.
no setter
isEmail → bool

Available on String, provided by the StringX extension

Returns true if the string is a valid email format.
no setter
isNotBlank → bool

Available on String, provided by the StringX extension

Returns true if the string contains non-whitespace characters.
no setter
isNumeric → bool

Available on String, provided by the StringX extension

Returns true if the string represents a valid number.
no setter
isUrl → bool

Available on String, provided by the StringX extension

Returns true if the string is a valid URL.
no setter
jsonDecodeOrNull → dynamic

Available on String, provided by the StringX extension

Decodes JSON, returns null on failure instead of throwing.
no setter
readingTimeMinutes → int

Available on String, provided by the StringX extension

Estimates the reading time in minutes (225 words per minute).
no setter
removeWhitespace → String

Available on String, provided by the StringX extension

Removes all whitespace, including internal.
no setter
reversed → String

Available on String, provided by the StringX extension

Reverses the string (Unicode-safe via runes).
no setter
toBool → bool

Available on String, provided by the StringX extension

Parses string as boolean ('true' evaluates to true, else false).
no setter
toCamelCase → String

Available on String, provided by the StringX extension

'Hello World' → 'helloWorld'
no setter
toDoubleOrNull → double?

Available on String, provided by the StringX extension

Parses to double, returns null on failure.
no setter
toDoubleOrZero → double

Available on String, provided by the StringX extension

Parses to double, returns 0.0 on failure.
no setter
toDurationOrNull → Duration?

Available on String, provided by the StringX extension

Parses "SS", "MM:SS", or "HH:MM:SS" into a Duration, returns null on failure.
no setter
toIntOrNull → int?

Available on String, provided by the StringX extension

Parses to int, returns null on failure.
no setter
toIntOrZero → int

Available on String, provided by the StringX extension

Parses to int, returns 0 on failure.
no setter
toKebabCase → String

Available on String, provided by the StringX extension

'Hello World' / 'helloWorld' → 'hello-world'
no setter
toScreamingSnakeCase → String

Available on String, provided by the StringX extension

'hello world' → 'HELLO_WORLD'
no setter
toSentenceCase → String

Available on String, provided by the StringX extension

Capitalizes only the first character.
no setter
toSlug → String

Available on String, provided by the StringX extension

URL-safe slug: lowercased, spaces→hyphens, non-alphanumeric stripped. 'Hello World! 2024' → 'hello-world-2024'
no setter
toSnakeCase → String

Available on String, provided by the StringX extension

'Hello World' / 'helloWorld' → 'hello_world'
no setter
toTitleCase → String

Available on String, provided by the StringX extension

Capitalizes the first letter of each whitespace-delimited word.
no setter
toUriOrNull → Uri?

Available on String, provided by the StringX extension

Parses string to Uri, returns null on failure.
no setter

Methods

countOccurrences(String pattern) → int

Available on String, provided by the StringX extension

Counts non-overlapping occurrences of pattern.
hasLengthBetween(int min, int max) → bool

Available on String, provided by the StringX extension

Passes if length falls within [min, max] after trimming.
repeat(int count) → String

Available on String, provided by the StringX extension

Repeats this string count times.
toDuration() → Duration

Available on String, provided by the StringX extension

Parses "SS", "MM:SS", or "HH:MM:SS" into a Duration.
truncate(int maxLength, {String ellipsis = '...'}) → String

Available on String, provided by the StringX extension

Truncates to maxLength chars, appending ellipsis if cut.
truncateWords(int maxLength, {String ellipsis = '...'}) → String

Available on String, provided by the StringX extension

Truncates at a word boundary instead of mid-word.
wrap(String prefix, [String? suffix]) → String

Available on String, provided by the StringX extension

Wraps the string with prefix and suffix (defaults to prefix).