string

☰std/string/containsWhitespace

Checks if the given string contains whitespace.

Type signature

(x: string) => boolean

Examples

containsWhitespace("test string");
// ⇒ true

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containsWhitespace("test");
// ⇒ false

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Questions

How to check if a string contains whitespace?

TypeScript source • JavaScript source

☰std/string/empty

Empty string.

Type signature

""

Examples

empty();
// ⇒ ""

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Questions

How to get an empty string?

TypeScript source • JavaScript source

☰std/string/firstToLower

Transforms the first character to lowercase.

Type signature

(text: string) => string

Examples

firstToLower("TeSt");
// ⇒ "teSt"

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Questions

How to make the first letter of a string lowercase?

TypeScript source • JavaScript source

☰std/string/firstToUpper

Transforms the first character to uppercase.

Type signature

(text: string) => string

Examples

firstToUpper("teSt");
// ⇒ "TeSt"

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Questions

How to make the first letter of a string uppercase?

TypeScript source • JavaScript source

☰std/string/includes

Checks if the given substring is present in the source string.

Type signature

(search: string) => (text: string) => boolean

Examples

includes("brown fox")(
  "The quick brown fox jumps over the lazy dog",
);
// ⇒ true

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includes("brown dog")(
  "The quick brown fox jumps over the lazy dog",
);
// ⇒ false

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Questions

How to check if a string contains a given substring?

TypeScript source • JavaScript source

☰std/string/nbsp

Non-breaking space.

Type signature

" "

Examples

nbsp;
// ⇒ " "

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Questions

How to get a non-breaking space?

TypeScript source • JavaScript source

☰std/string/nonEmpty

Checks if the given string is present and is not empty or all whitespace.

Type signature

(x?: string) => boolean

Examples

nonEmpty("test with spaces");
// ⇒ true

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nonEmpty("   ");
// ⇒ false

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nonEmpty(null);
// ⇒ false

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Questions

How to check if a string is non-empty?
How to check if a string is not all whitespace?
How to check if a string is not null or undefined?

TypeScript source • JavaScript source

☰std/string/startsWith

Checks if the given string starts with the given substring.

Type signature

(prefix: string) => (xs: string) => boolean

Examples

startsWith("The")(
  "The quick brown fox jumps over the lazy dog",
);
// ⇒ true

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startsWith("Quick")(
  "The quick brown fox jumps over the lazy dog",
);
// ⇒ false

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Questions

How to check if a string starts with a given substring?

TypeScript source • JavaScript source