tornado.util — org.clojars.jansuran03/tornado 0.2.1

Utility functions used internally in Tornado.

->fixed clj/s

(->fixed x)

(->fixed x d)

Rounds a given number x to d decimal digits, or 0 by default.

apply-avg clj/s

(apply-avg coll)

Same as (apply average coll)

average clj/s

(average & args)

Computes the average of 1 or more numbers. Accepts elements directly, use apply-avg for a sequence..

base10->double-hex-map clj/s

base16-chars clj/s

between clj/s

(between value n1 n2)

Returns true if value is smaller than or equal n1 and greater than or equal n2.

c->int clj/s

(c->int x)

cartesian-product clj/s macro

(cartesian-product & seqs)

Given any number of seqs, this function returns a lazy sequence of all possible combinations of taking 1 element from each of the input sequences.

conjv clj/s

(conjv vect value)

Equal to (conj (vec vect) value).

double-hex->base10-map clj/s

A precalculated map for very fast conversions of hexadecimal strings in format "xx" to base10 numbers.

double-hex? clj/s

(double-hex? str-expr)

Returns true if every 2-characters substring of the given string expression matches to the hexadecimal characters.

exception clj/s

(exception arg)

get-str-form clj/s

(get-str-form x)

If the argument is a symbol, a keyword or a string, returns its string form. Otherwise, returns nil.

in-range clj/s

(in-range val min-val max-val)

If the value is not in range of min-val and max-val, returns the value of the corresponding border which is nearer to the value, otherwise returns the value.

int* clj/s

(int* x)

Converts a float to an integer if the value would remain equal. Ratios will be converted to a float, or, again, to an integer if possible.

lowercase-uppercase-difference clj/s

math-pow clj/s

(math-pow x y)

math-round clj/s

(math-round x)

parse-float clj/s

(parse-float s)

percent->number clj/s

(percent->number value)

(percent->number value throw-if-no-match)

If the argument is a value in percent, convert it to a corresponding numeral value. Throws an exception if the optional 2nd argument has a truthy value and the input type is none of string, number or CSSUnit instance. Otherwise thís function does not do anything and will return the input.

(percent->int 0.5) => 0.5

(percent->int "75%") ; can be "75 %" as well => 0.75

(percent->int (tornado.units/percent 35)) => 0.35

percent-with-symbol-append clj/s

(percent-with-symbol-append value)

Multiplies a number with 100 to get a percentage value of it. Returns a string form of it with "%" appended. Non-numbers are returned unaffected.

prune-nils clj/s

(prune-nils m)

Given a map, removes all keys having nil value. If the pruned map is empty, returns nil.

round clj/s

(round x)

Rounds a given number to 4 decimal digits, which should be enough in most cases.

some-instance? clj/s

(some-instance? expr & instances)

Returns true if the expression is an instance of any of the instances.

str-butlast clj/s

(str-butlast s)

Returns the given string without the last character.

str-colonjoin clj/s

(str-colonjoin coll)

str/join with ": "

str-commajoin clj/s

(str-commajoin coll)

str/join with ", "

str-spacejoin clj/s

(str-spacejoin coll)

str/join with " "

to-percent-float clj/s

(to-percent-float value)

Parses a percentage from a string or multiplies a number with 100 to get a percentage value of it: (tpf "12%") => 12 (tpf "3") => 300 (tpf 8) => 800

toLower clj/s

(toLower c)

Characters [A-F] will be transformed to [a-f], other chars will be returned unchanged.

uppercase-base16-set clj/s

valid? clj/s

(valid? x)

Returns true if the argument is a symbol, a keyword or a string.