sparrows.misc — org.clojars.august/sparrows 0.2.9

dissoc-empty-val clj

(dissoc-empty-val m)

Remove all entries with nil or empty val

dissoc-nil-val clj deprecated

(dissoc-nil-val m)

Remove all entries with nil val

get-apk-meta-info clj

(get-apk-meta-info apk & [select-keys])

Get meta info as a seq of map from an apk. Requires aapt command on Linux system. select-keys is vector which can be used to filter entries to be returned.

get-time-as-string clj

(get-time-as-string time-millis
                    &
                    {:keys [format timezone]
                     :or {format "yyyy/MM/dd HH:mm:ss" timezone "GMT+8"}})

Convert epoch time in millis to string by wrapping around SimpleDateFormat. timezone should be like GMT-8 or GMT+8. Note that if no timezone is specified, GMT+8 will be employed.

if-and-let clj macro

(if-and-let bindings then-clause)

(if-and-let bindings then-clause else-clause)

Like if-let, but with multiple bindings allowed. If all of the expressions in the bindings evaluate truthy, the then-clause is executed with all of the bindings in effect. If any of the expressions evaluates falsey,evaluation of the remaining binding exprs is not done, and the else-clause is executed with none of the bindings in effect. If else-clause is omitted, evaluates to nil if any of the binding expressions evaluates falsey. As with normal let bindings, each binding is available in the subsequent bindings. (if-and-let [a (get my-map :thing) b (do-thing-with a)] ...) is legal, and will not throw a null pointer exception if my-map lacks a :thing key and (do-thing-with nil) would throw an NPE. If there's something you want to be part of the then-clause's condition,but whose value you don't care about, including a binding of it to _ is more compact than nesting yet another if inside the then-clause. Example: (if-and-let [x (:a {:a 42}) y (first [(/ x 3)])] [x y] :nothing)

if-and-let* clj

(if-and-let* bindings then-clause else-clause deshadower)

lowercase-trim clj

(lowercase-trim str)

Convert to lowercase and trim. Returns nil if any exception occurs.

maybe-vals->int clj

(maybe-vals->int m)

Convert all values in a map to number if possible.

now-millis clj

(now-millis)

now-nanos clj

(now-nanos)

num= clj

(num= & args)

Returns true if every argument is approximately equal. Converts string to number automatically.

rand-ints clj

(rand-ints n)

Return a string with n random digits

str->num clj

(str->num n)

String to number. If input is already a number, returns itself. Returns nil if input is not a number.

super-of? clj

(super-of? p c)

Determines if p is a super class/interface of c.

Usage (super-of? Throwable (.getClass e#))

trim clj

(trim input)

Trims a string, returns nil if the string is blank.

uuid clj

(uuid)

Return uuid without hyphens

wrap-exception clj

(wrap-exception func & [call-back])

Wrap exception with an optional call-back function. The call-back function accepts the exception e and the inputs of func as args. Returns nil if no call-back is provide.

wrap-nil-on-error clj macro

(wrap-nil-on-error & body)

Eval (list* func args) in a try catch block. If any error is caught, returns nil

wrap-time clj

(wrap-time f)

(wrap-time key f)

Returns a wrapped function of the original, logs execution time of this function if :enable-time-logging is enabled.

zip-str clj

(zip-str s)

convenience function to parse xml string as clojure datastructure, first seen at nakkaya.com later in clj.zip src