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      some->

      clojure.core

      Available since 1.5 (source)
      • (some-> expr & forms)
      When expr is not nil, threads it into the first form (via ->),
and when that result is not nil, through the next etc
      © Rich Hickey. All rights reserved. Eclipse Public License 1.0
      2 Examples
      user=> (-> {:a 1} :b inc)
;; NullPointerException   clojure.lang.Numbers.ops (Numbers.java:942)

user=> (some-> {:a 1} :b inc)
;; nil

      ;; Often used to "short-circuit out" of a series of steps:

(some-> val
        step1
        step2
        step3)

;; When nil is returned by any step, the further steps are not executed. Thus
;; the nil case need be handled only once, at the end.
      See Also
      clojure.core/some->>

      When expr is not nil, threads it into the first form (via ->>), and when that result is not nil, t...

      Added by jw-00000
      clojure.core/->

      Threads the expr through the forms. Inserts x as the second item in the first form, making a list ...

      Added by jw-00000
      clojure.core/cond->

      Takes an expression and a set of test/form pairs. Threads expr (via ->) through each form for whic...

      Added by abrooks
      clojure.core/cond->>

      Takes an expression and a set of test/form pairs. Threads expr (via ->>) through each form for whi...

      Added by abrooks
      clojure.core/as->

      Binds name to expr, evaluates the first form in the lexical context of that binding, then binds na...

      Added by abrooks
      clojure.core/->>

      Threads the expr through the forms. Inserts x as the last item in the first form, making a list of...

      Added by abrooks
      0 Notes
      No notes for some->