ui-underscore

Port of some underscore-js functions for meteor ui.

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$ne arg1, arg2

returns true if arg1 doesn't equals arg2

  {{#if $ne "one" "two"}}
    one isn't two
  {{else}}
    one is two
  {{/if}}

  => one isn't two

  <input type="checkbox" checked={{$ne "one" "two"}}/>

  => <input type="checkbox" checked/>  

$eq arg1, arg2

returns true if arg1 equals arg2

  {{#if $eq "one" "two"}}
    one is two
  {{else}}
    one isn't two
  {{/if}}

  => one isn't two

  <input type="checkbox" checked={{$eq "one" "two"}}/>

  => <input type="checkbox"/>

$gt arg1, arg2

returns true if arg1 is greater than arg2

  {{#if $gt 2 1}}
    two is greater than one
  {{else}}
    one is greater than two
  {{/if}}

  => two is greater than one

  <input type="checkbox" checked={{$gt value 10}}/>

$gte arg1, arg2

returns true if arg1 is greater or equals arg2

  {{#if $gte 2 1}}
    two is greater or equals one
  {{else}}
    one is greater or equals two
  {{/if}}

  => two is greater or equals one

  <input type="checkbox" checked={{$gte value 10}}/>

$lt arg1, arg2

returns true if arg1 is lower than arg2

  {{#if $lt 2 1}}
    two is lower than one
  {{else}}
    one is lower than two
  {{/if}}

  => one is lower than two

  <input type="checkbox" checked={{$lt value 10}}/>

$lte arg1, arg2

returns true if arg1 is lower or equals arg2

  {{#if $lt 2 1}}
    two is lower or equals one
  {{else}}
    one is lower or equals two
  {{/if}}

  => one is lower or equals two

  <input type="checkbox" checked={{$lt value 10}}/>

Conditional

$sw arg, args...

returns first value of args if arg is true returns second value of args if arg is false returns n-th value of args if arg is a number returns an empty string if nothing matches

  <div class="{{$sw isActive "active"}}"/>

  <div class="{{$sw true "active"}}"/>

  => <div class="active"/>

  <div class="{{$sw false "active" "inactive"}}"/>

  => <div class="inactive"/>

  <div class="{{$sw 3 "one" "two" "three" "four"}}"/>

  => <div class="three"/>

Collections

$contains
$indexOf
$lastIndexOf
$min
$max
$first
$last
$flatten
$compact
$intersection
$difference

Objects

$keys
$values
$pairs
$invert
$functions
$pick
$omit
$has