re_match(pattern string, text string) => bool/error: reports whether the
string s contains any match of the regular expression pattern.
re_find(pattern string, text string, count int) => [[{text: string, begin: int, end: int}]]/undefined:
returns an array holding all matches, each of which is an array of map object
that contains matching text, begin and end (exclusive) index.
re_replace(pattern string, text string, repl string) => string/error:
returns a copy of src, replacing matches of the pattern with the replacement
string repl.
re_split(pattern string, text string, count int) => [string]/error: slices
s into substrings separated by the expression and returns a slice of the
substrings between those expression matches.
re_compile(pattern string) => Regexp/error: parses a regular expression and
returns, if successful, a Regexp object that can be used to match against
text.
compare(a string, b string) => int: returns an integer comparing two
strings lexicographically. The result will be 0 if a==b, -1 if a < b, and +1
if a > b.
contains(s string, substr string) => bool: reports whether substr is within
s.
contains_any(s string, chars string) => bool: reports whether any Unicode
code points in chars are within s.
count(s string, substr string) => int: counts the number of non-overlapping
instances of substr in s.
equal_fold(s string, t string) => bool: reports whether s and t,
interpreted as UTF-8 strings,
fields(s string) => [string]: splits the string s around each instance of
one or more consecutive white space characters, as defined by unicode.IsSpace,
returning a slice of substrings of s or an empty slice if s contains only
white space.
has_prefix(s string, prefix string) => bool: tests whether the string s
begins with prefix.
has_suffix(s string, suffix string) => bool: tests whether the string s
ends with suffix.
index(s string, substr string) => int: returns the index of the first
instance of substr in s, or -1 if substr is not present in s.
index_any(s string, chars string) => int: returns the index of the first
instance of any Unicode code point from chars in s, or -1 if no Unicode code
point from chars is present in s.
join(arr string, sep string) => string: concatenates the elements of a to
create a single string. The separator string sep is placed between elements
in the resulting string.
last_index(s string, substr string) => int: returns the index of the last
instance of substr in s, or -1 if substr is not present in s.
last_index_any(s string, chars string) => int: returns the index of the
last instance of any Unicode code point from chars in s, or -1 if no Unicode
code point from chars is present in s.
repeat(s string, count int) => string: returns a new string consisting of
count copies of the string s.
replace(s string, old string, new string, n int) => string: returns a copy
of the string s with the first n non-overlapping instances of old replaced by
new.
substr(s string, lower int, upper int) => string => string: returns a
substring of the string s specified by the lower and upper parameters.
split(s string, sep string) => [string]: slices s into all substrings
separated by sep and returns a slice of the substrings between those
separators.
split_after(s string, sep string) => [string]: slices s into all substrings
after each instance of sep and returns a slice of those substrings.
split_after_n(s string, sep string, n int) => [string]: slices s into
substrings after each instance of sep and returns a slice of those substrings.
split_n(s string, sep string, n int) => [string]: slices s into substrings
separated by sep and returns a slice of the substrings between those
separators.
title(s string) => string: returns a copy of the string s with all Unicode
letters that begin words mapped to their title case.
to_lower(s string) => string: returns a copy of the string s with all
Unicode letters mapped to their lower case.
to_title(s string) => string: returns a copy of the string s with all
Unicode letters mapped to their title case.
to_upper(s string) => string: returns a copy of the string s with all
Unicode letters mapped to their upper case.
pad_left(s string, pad_len int, pad_with string) => string: returns a copy
of the string s padded on the left with the contents of the string pad_with
to length pad_len. If pad_with is not specified, white space is used as the
default padding.
pad_right(s string, pad_len int, pad_with string) => string: returns a
copy of the string s padded on the right with the contents of the string
pad_with to length pad_len. If pad_with is not specified, white space is
used as the default padding.
trim(s string, cutset string) => string: returns a slice of the string s
with all leading and trailing Unicode code points contained in cutset removed.
trim_left(s string, cutset string) => string: returns a slice of the string
s with all leading Unicode code points contained in cutset removed.
trim_prefix(s string, prefix string) => string: returns s without the
provided leading prefix string.
trim_right(s string, cutset string) => string: returns a slice of the
string s, with all trailing Unicode code points contained in cutset removed.
trim_space(s string) => string: returns a slice of the string s, with all
leading and trailing white space removed, as defined by Unicode.
trim_suffix(s string, suffix string) => string: returns s without the
provided trailing suffix string.
atoi(str string) => int/error: returns the result of ParseInt(s, 10, 0)
converted to type int.
format_bool(b bool) => string: returns “true” or “false” according to the
value of b.
format_float(f float, fmt string, prec int, bits int) => string: converts
the floating-point number f to a string, according to the format fmt and
precision prec.
format_int(i int, base int) => string: returns the string representation of
i in the given base, for 2 <= base <= 36. The result uses the lower-case
letters ‘a’ to ‘z’ for digit values >= 10.
itoa(i int) => string: is shorthand for format_int(i, 10).
parse_bool(s string) => bool/error: returns the boolean value represented
by the string. It accepts 1, t, T, TRUE, true, True, 0, f, F, FALSE, false,
False. Any other value returns an error.
parse_float(s string, bits int) => float/error: converts the string s to a
floating-point number with the precision specified by bitSize: 32 for float32,
or 64 for float64. When bitSize=32, the result still has type float64, but it
will be convertible to float32 without changing its value.
parse_int(s string, base int, bits int) => int/error: interprets a string s
in the given base (0, 2 to 36) and bit size (0 to 64) and returns the
corresponding value i.
quote(s string) => string: returns a double-quoted Go string literal
representing s. The returned string uses Go escape sequences (\t, \n, \xFF,
\u0100) for control characters and non-printable characters as defined by
IsPrint.
unquote(s string) => string/error: interprets s as a single-quoted,
double-quoted, or backquoted Go string literal, returning the string value
that s quotes. (If s is single-quoted, it would be a Go character literal;
Unquote returns the corresponding one-character string.)
Regexp
match(text string) => bool: reports whether the string s contains any match
of the regular expression pattern.
find(text string, count int) => [[{text: string, begin: int, end: int}]]/undefined:
returns an array holding all matches, each of which is an array of map object
that contains matching text, begin and end (exclusive) index.
replace(src string, repl string) => string: returns a copy of src,
replacing matches of the pattern with the replacement string repl.
split(text string, count int) => [string]: slices s into substrings
separated by the expression and returns a slice of the substrings between
those expression matches.