libmisc-clj.misc — com.dkdhub/libmisc-clj 1.0.0

base64-string? clj

(base64-string? s)

Is s a Base-64 encoded string?

email? clj

(email? s)

Is STRING a valid email address?

filter-hashmap clj

(filter-hashmap func amap)

returns map filtered by a function func

format-bytes clj

(format-bytes num-bytes)

Nicely format num-bytes as kilobytes/megabytes/etc. (format-bytes 1024) ; -> 2.0 KB

hexadecimal-string? clj

(hexadecimal-string? new-value)

Returns truthy if new-value is a hexadecimal-string

host-port-up? clj

(host-port-up? hostname port)

(host-port-up? hostname port timeout)

Returns true if the port is active on a given host, false otherwise. Uses InetSocketAddress and Socket.connect (i.e. reliable TCP proto) under the hood. The hostname is always treated as name to be used to determine the IP address of a host. If it fails the results is also negative. By default, waits 5 seconds till return, this may be configured using an optional parameter timeout (time to wait in milliseconds)

host-up? clj

(host-up? hostname)

(host-up? hostname timeout)

Returns true if the host given by hostname is reachable, false otherwise. The hostname is always treated as name to be used to determine the IP address of a host. If it fails the results is also negative. By default, waits 5 seconds till return, this may be configured using an optional parameter timeout (time to wait in milliseconds)

in? clj

(in? x coll)

Return true if x is in coll or false otherwise

index-of clj

(index-of pred coll)

Return index of the first element in coll for which pred reutrns true.

int->bytes clj

(int->bytes value)

Converts int value into a sequence of 4 bytes. The zeroes are padded to the beginning in order to make the BigInteger constructor working

jnio->string clj

(jnio->string byte-buffer)

(jnio->string byte-buffer charset)

limit-strlen clj macro

(limit-strlen s max)

literal? clj

(literal? s)

localdate-now clj

(localdate-now tz)

long->bytes clj

(long->bytes value)

Converts long value into a sequence of 8 bytes. The zeroes are padded to the beginning in order to make the BigInteger constructor working

map-values clj

(map-values m ks)

maybe? clj

(maybe? f x)

Returns true if X is nil, otherwise calls (F X). This can be used to see something is either nil or statisfies a predicate function: (string? nil) -> false (string? "A") -> true (maybe? string? nil) -> true (maybe? string? "A") -> true It can also be used to make sure a given function won't throw a NullPointerException: (s/lower-case nil) -> NullPointerException (s/lower-case "ABC") -> "abc" (maybe? s/lower-case nil) -> true (maybe? s/lower-case "ABC") -> "abc" The latter use-case can be useful for things like sorting where some values in a collection might be nil: (sort-by (partial maybe? s/lower-case) some-collection)

multi-merge clj

(multi-merge maps)

(multi-merge {:keys [collect?] :or {collect? false} :as opts} maps)

Merges maps recursively

nn? clj

not-nil? clj

nz? clj

round-to-decimals clj

(round-to-decimals decimal-place number)

Round (presumabily floating-point) NUMBER to DECIMAL-PLACE. Returns a Double. (round-to-decimals 2 35.5058998M) -> 35.51

safe-inc clj

(safe-inc n)

Increment N if it is non-nil, otherwise return 1 (e.g. as if incrementing 0).

select-values clj

(select-values m ks)

sequence-of-maps? clj

(sequence-of-maps? coll)

Is COLL a sequence of maps?

string->jnio clj

(string->jnio string)

(string->jnio string charset)

sym->var clj

(sym->var val)

update-in-when clj

(update-in-when m k f & args)

Like clojure.core/update-in but does not create new keys if they do not exist. Useful when you don't want to create cruft.

update-when clj

(update-when m k f & args)

Like clojure.core/update but does not create a new key if it does not exist. Useful when you don't want to create cruft.

url? clj

(url? s)

Is STRING a valid HTTP/HTTPS URL? (This only handles localhost and domains like metabase.com; URLs containing IP addresses will return false.)