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clojens/ns-cheatsheet.clj

Forked from ghoseb/ns-cheatsheet.clj
Created April 3, 2013 09:25
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Revisions

  1. Baishampayan Ghose revised this gist Jan 27, 2010. 1 changed file with 0 additions and 13 deletions.
    13 changes: 0 additions & 13 deletions ns-cheatsheet.clj
    View file
    Original file line number Diff line number Diff line change
    @@ -11,19 +11,6 @@
    ;; * :refer-clojure affects availability of built-in (clojure.core)
    ;; functions.
    ;;
    ;; Rules of thumb:
    ;;
    ;; * Use lists to reduce repetition in namespace paths. These are
    ;; equivalent:
    ;;
    ;; [:require clojure.contrib.math clojure.contrib.seq-utils]
    ;; [:require [clojure.contrib math seq-utils]]
    ;;
    ;; * Use vectors for keyword options. Examples (which are equivalent):
    ;;
    ;; [:use [clojure.contrib.math :only [sqrt]]]
    ;; [:use [clojure.contrib [math :only [sqrt]]]]
    ;;

    (ns foo.bar

  2. @ghoseb ghoseb revised this gist Jan 27, 2010. 1 changed file with 16 additions and 16 deletions.
    32 changes: 16 additions & 16 deletions ns-cheatsheet.clj
    View file
    Original file line number Diff line number Diff line change
    @@ -16,13 +16,13 @@
    ;; * Use lists to reduce repetition in namespace paths. These are
    ;; equivalent:
    ;;
    ;; (:require clojure.contrib.math clojure.contrib.seq-utils)
    ;; (:require (clojure.contrib math seq-utils))
    ;; [:require clojure.contrib.math clojure.contrib.seq-utils]
    ;; [:require [clojure.contrib math seq-utils]]
    ;;
    ;; * Use vectors for keyword options. Examples (which are equivalent):
    ;;
    ;; (:use [clojure.contrib.math :only [sqrt]])
    ;; (:use (clojure.contrib [math :only [sqrt]]))
    ;; [:use [clojure.contrib.math :only [sqrt]]]
    ;; [:use [clojure.contrib [math :only [sqrt]]]]
    ;;

    (ns foo.bar
    @@ -31,53 +31,53 @@

    ;; Refers clojure.contrib.math into current NS, e.g.:
    ;; (clojure.contrib.math/sqrt 4)
    (:require (clojure.contrib math))
    [:require [clojure.contrib math]]

    ;; Refers math into current NS, e.g.:
    ;; (math/sqrt 4)
    (:require (clojure.contrib [math :as math]))
    [:require [clojure.contrib [math :as math]]]

    ;; Refers clojure.contrib.seq-utils and math into current NS, e.g.:
    ;; (clojure.contrib.seq-utils/flatten [[1 2] 3])
    ;; (math/sqrt 4)
    (:require (clojure.contrib seq-utils [math :as math]))
    [:require [clojure.contrib seq-utils [math :as math]]]

    ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

    ;; Refers all functions from clojure.contrib.math and
    ;; clojure.contrib.seq-utils into current NS, e.g.:
    ;; (sqrt 4)
    ;; (flatten [[1 2] 3])
    (:use (clojure.contrib math seq-utils))
    [:use [clojure.contrib math seq-utils]]

    ;; Refers only sqrt and flatten into current NS, e.g.:
    ;; (sqrt 4)
    ;; (flatten [[1 2] 3])
    (:use (clojure.contrib [math :only [sqrt]]
    [seq-utils :only [flatten]]))
    [:use [clojure.contrib [math :only [sqrt]]
    [seq-utils :only [flatten]]]]

    ;; Refers all functions from clojure.contrib.math except sqrt into
    ;; current NS
    (:use [clojure.contrib.math :exclude [sqrt]])
    [:use [clojure.contrib.math :exclude [sqrt]]]

    ;; Refers sqrt into current NS as ccm-sqrt, plus all other math
    ;; functions e.g.:
    ;; (ccm-sqrt 4)
    ;; (round 1.3)
    (:use [clojure.contrib.math :rename {sqrt ccm-sqrt}])
    [:use [clojure.contrib.math :rename {sqrt ccm-sqrt}]]

    ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

    ;; Refers ArrayList and HashMap into current NS:
    (:import (java.util ArrayList HashMap))
    [:import [java.util ArrayList HashMap]]

    ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

    ;; Excludes built-in print
    (:refer-clojure :exclude [print])
    [:refer-clojure :exclude [print]]

    ;; Excludes all built-ins except print
    (:refer-clojure :only [print])
    [:refer-clojure :only [print]]

    ;; Renames built-in print to core-print
    (:refer-clojure :rename {print core-print}))
    [:refer-clojure :rename {print core-print}])
  3. @jkk jkk created this gist Jan 22, 2010.
    83 changes: 83 additions & 0 deletions ns-cheatsheet.clj
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,83 @@
    ;;
    ;; NS CHEATSHEET
    ;;
    ;; * :require makes functions available with a namespace prefix.
    ;;
    ;; * :use makes functions available without a namespace prefix
    ;; (i.e., refers functions to the current namespace).
    ;;
    ;; * :import refers Java classes to the current namespace.
    ;;
    ;; * :refer-clojure affects availability of built-in (clojure.core)
    ;; functions.
    ;;
    ;; Rules of thumb:
    ;;
    ;; * Use lists to reduce repetition in namespace paths. These are
    ;; equivalent:
    ;;
    ;; (:require clojure.contrib.math clojure.contrib.seq-utils)
    ;; (:require (clojure.contrib math seq-utils))
    ;;
    ;; * Use vectors for keyword options. Examples (which are equivalent):
    ;;
    ;; (:use [clojure.contrib.math :only [sqrt]])
    ;; (:use (clojure.contrib [math :only [sqrt]]))
    ;;

    (ns foo.bar

    ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

    ;; Refers clojure.contrib.math into current NS, e.g.:
    ;; (clojure.contrib.math/sqrt 4)
    (:require (clojure.contrib math))

    ;; Refers math into current NS, e.g.:
    ;; (math/sqrt 4)
    (:require (clojure.contrib [math :as math]))

    ;; Refers clojure.contrib.seq-utils and math into current NS, e.g.:
    ;; (clojure.contrib.seq-utils/flatten [[1 2] 3])
    ;; (math/sqrt 4)
    (:require (clojure.contrib seq-utils [math :as math]))

    ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

    ;; Refers all functions from clojure.contrib.math and
    ;; clojure.contrib.seq-utils into current NS, e.g.:
    ;; (sqrt 4)
    ;; (flatten [[1 2] 3])
    (:use (clojure.contrib math seq-utils))

    ;; Refers only sqrt and flatten into current NS, e.g.:
    ;; (sqrt 4)
    ;; (flatten [[1 2] 3])
    (:use (clojure.contrib [math :only [sqrt]]
    [seq-utils :only [flatten]]))

    ;; Refers all functions from clojure.contrib.math except sqrt into
    ;; current NS
    (:use [clojure.contrib.math :exclude [sqrt]])

    ;; Refers sqrt into current NS as ccm-sqrt, plus all other math
    ;; functions e.g.:
    ;; (ccm-sqrt 4)
    ;; (round 1.3)
    (:use [clojure.contrib.math :rename {sqrt ccm-sqrt}])

    ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

    ;; Refers ArrayList and HashMap into current NS:
    (:import (java.util ArrayList HashMap))

    ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

    ;; Excludes built-in print
    (:refer-clojure :exclude [print])

    ;; Excludes all built-ins except print
    (:refer-clojure :only [print])

    ;; Renames built-in print to core-print
    (:refer-clojure :rename {print core-print}))