Strings (dw::core::Strings)

Question 1

appendIfMissing

Answer 1

Appends the suffix to the end of the text if the text does not already ends with the suffix.

Question 2

camelize

Answer 2

Returns a string in camel case based on underscores in the string.

Question 3

capitalize

Answer 3

Capitalizes the first letter of each word in a string.

Question 4

charCode

Answer 4

Returns the Unicode for the first character in an input string.

Question 5

charCodeAt

Answer 5

Returns the Unicode for a character at the specified index.

Question 6

collapse

Answer 6

Collapses the string into substrings of equal characters.

Question 7

countCharactersBy

Answer 7

Counts the number of times an expression that iterates through each character in a string returns true.

Question 8

countMatches

Answer 8

Counts the number of matches in a string.

Question 9

dasherize

Answer 9

Replaces spaces, underscores, and camel-casing in a string with dashes (hyphens).

Question 10

everyCharacter

Answer 10

Checks whether a condition is valid for every character in a string.

Question 11

first

Answer 11

Returns characters from the beginning of a string to the specified number of characters in the string, for example, the first two characters of a string.

Question 12

fromCharCode

Answer 12

Returns a character that matches the specified Unicode.

Question 13

hammingDistance

Answer 13

Returns the Hamming distance between two strings.

Question 14

isAlpha

Answer 14

Checks if the text contains only Unicode digits. A decimal point is not a Unicode digit and returns false.

Question 15

isAlphanumeric

Answer 15

Checks if the text contains only Unicode letters or digits.

Question 16

isLowerCase

Answer 16

Checks if the text contains only lowercase characters.

Question 17

isNumeric

Answer 17

Checks if the text contains only Unicode digits.

Question 18

isUpperCase

Answer 18

Checks if the text contains only uppercase characters.

Question 19

isWhitespace

Answer 19

Checks if the text contains only whitespace.

Question 20

last

Answer 20

Returns characters from the end of string to a specified number of characters, for example, the last two characters of a string.

Question 21

leftPad

Answer 21

The specified text is left-padded to the size using the padText. By default padText is “ “.

Question 22

levenshteinDistance

Answer 22

Returns the Levenshtein distance (or edit distance) between two strings.

Question 23

lines

Answer 23

Returns an array of lines from a string.

Question 24

mapString

Answer 24

Applies an expression to every character of a string.

Question 25

ordinalize

Answer 25

Returns a number as an ordinal, such as 1st or 2nd.

Question 26

pluralize

Answer 26

Pluralizes a singular string.

Question 27

prependIfMissing

Answer 27

Prepends the prefix to the beginning of the string if the text does not already start with that prefix.

Question 28

remove

Answer 28

Removes all occurrences of a specified pattern from a string.

Question 29

repeat

Answer 29

Repeats a text the number of specified times.

Question 30

replaceAll

Answer 30

Replaces all substrings that match a literal search string with a specified replacement string.

Question 31

reverse

Answer 31

Reverses sequence of characters in a string.

Question 32

rightPad

Answer 32

The specified text is right-padded to the size using the padText. By default padText is “ “.

Question 33

singularize

Answer 33

Converts a plural string to its singular form.

Question 34

someCharacter

Answer 34

Checks whether a condition is valid for at least one of the characters or blank spaces in a string.

Question 35

substring

Answer 35

Returns a substring that spans from the character at the specified from index to the last character before the until index.

Question 36

substringAfter

Answer 36

Gets the substring after the first occurrence of a separator. The separator is not returned.

Question 37

substringAfterLast

Answer 37

Gets the substring after the last occurrence of a separator. The separator is not returned.

Question 38

substringBefore

Answer 38

Gets the substring before the first occurrence of a separator. The separator is not returned.

Question 39

substringBeforeLast

Answer 39

Gets the substring before the last occurrence of a separator. The separator is not returned.

Question 40

substringBy

Answer 40

Splits a string at each character where the predicate expression returns true.

Question 41

substringEvery

Answer 41

Splits a string into an array of substrings equal to a specified length.

Question 42

underscore

Answer 42

Replaces hyphens, spaces, and camel-casing in a string with underscores.

Question 43

unwrap

Answer 43

Unwraps a given text from a wrapper text.

Question 44

withMaxSize

Answer 44

Checks that the string length is no larger than the specified maxLength. If the string’s length is larger than the maxLength, the function cuts characters from left to right, until the string length meets the length limit.

Question 45

words

Answer 45

Returns an array of words from a string.

Question 46

wrapIfMissing

Answer 46

Wraps text with wrapper if that wrapper is missing from the start or end of the given string.