fn dice_coefficient(s1 string, s2 string) f32
implementation of Sørensen–Dice coefficient.
find the similarity between two strings.
returns coefficient between 0.0 (not similar) and 1.0 (exact match).
fn levenshtein_distance(a string, b string) int
#-js use levenshtein distance algorithm to calculate the distance between between two strings (lower is closer)
fn levenshtein_distance_percentage(a string, b string) f32
use levenshtein distance algorithm to calculate how similar two strings are as a percentage (higher is closer)
fn new_builder(initial_size int) Builder
new_builder returns a new string builder, with an initial capacity of
fn repeat(c byte, n int) string
strings.repeat - fill a string with
n repetitions of the character
fn repeat_string(s string, n int) string
strings.repeat_string - gives you
n repetitions of the substring
s NB: strings.repeat, that repeats a single byte, is between 2x
and 24x faster than strings.repeat_string called for a 1 char string.
type Builder = byte
strings.Builder is used to efficiently append many strings to a large dynamically growing buffer, then use the resulting large string. Using a string builder is much better for performance/memory usage than doing constantly string concatenation.
fn (mut b Builder) write_ptr(ptr &byte, len int)
len bytes provided byteptr to the accumulated buffer
fn (mut b Builder) write_rune(r rune)
write_rune appends a single rune to the accumulated buffer
fn (mut b Builder) write_runes(runes rune)
write_runes appends all the given runes to the accumulated buffer
fn (mut b Builder) write_b(data byte)
write_b appends a single
data byte to the accumulated buffer
fn (mut b Builder) write(data byte) ?int
write implements the Writer interface
fn (b &Builder) byte_at(n int) byte
fn (mut b Builder) write_string(s string)
write appends the string
s to the buffer
fn (mut b Builder) go_back(n int)
go_back discards the last
n bytes from the buffer
fn (mut b Builder) cut_last(n int) string
cut_last cuts the last
n bytes from the buffer and returns them
fn (mut b Builder) cut_to(pos int) string
cut_to cuts the string after
pos and returns it.
pos is superior to builder length, returns an empty string and cancel further operations
fn (mut b Builder) go_back_to(pos int)
go_back_to resets the buffer to the given position
NB: pos should be < than the existing buffer length.
fn (mut b Builder) writeln(s string)
writeln appends the string
s, and then a newline character.
fn (b &Builder) last_n(n int) string
last_n(5) returns 'world' buf == 'hello world'
fn (b &Builder) after(n int) string
after(6) returns 'world' buf == 'hello world'
fn (mut b Builder) str() string
str returns a copy of all of the accumulated buffer content.
NB: after a call to b.str(), the builder b should not be used again, you need to call b.free() first, or just leave it to be freed by -autofree when it goes out of scope.
The returned string owns its own separate copy of the accumulated data that was in the string builder, before the .str() call.
fn (mut b Builder) free()
free is for manually freeing the contents of the buffer