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## how-to-install-postgis-on-macos.md

      
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                gssxgss
                / how-to-install-postgis-on-macos.md
            
            
              Created
              July 12, 2017 09:07
            
              
                Install PostGIS on macOS
              
          
install postgis
$ brew install postgis

start PostgreSQL service
$ brew services start postgres
stop PostgreSQL service


## animation related mixin
// tansition
=transition($transition)
  -webkit-transition: $transition // chrome 25-
  transition: $transition

// transform
=transform($transform)
  -webkit-transform: $transform
  transform: $transform

## group mixin
// group
=group
  &:after
    content: ""
    display: table
    clear: both

## media query mixin
// media query break point
// if 1em == 16px then 40em == 640px

=media($point)
  @if $point == "mobile"
    @media (max-width: 40em)
      @content
  @else if $point == "mobile2x"
    @media (-webkit-min-device-pixel-ratio: 2), (min-device-pixel-ratio: 2), (min-resolution: 2dppx)
      @content

## all versions of flex
/*
 * FLEX MIXINS
 *
 * NOTE: ! for reason to adapt the prefix
 *
 *
 * Old Syntax / 2009 Syntax / Box Syntax / WD
 * http://www.w3.org/TR/2009/WD-css3-flexbox-20090723/
 *
 *   -webkit

## linear-gradient with fallback
/* Functions */

/*
 * $c1 == $c2
 */
@function isSameColor($c1, $c2)
  @return red($c1) == red($c2) and green($c1) == green($c2) and blue($c1) == blue($c2)

/*
 * Get Middle Color
	// tansition
	=transition($transition)
	-webkit-transition: $transition // chrome 25-
	transition: $transition

	// transform
	=transform($transform)
	-webkit-transform: $transform
	transform: $transform
	// media query break point
	// if 1em == 16px then 40em == 640px

	=media($point)
	@if $point == "mobile"
	@media (max-width: 40em)
	@content
	@else if $point == "mobile2x"
	@media (-webkit-min-device-pixel-ratio: 2), (min-device-pixel-ratio: 2), (min-resolution: 2dppx)
	@content
	/*
	* FLEX MIXINS
	*
	* NOTE: ! for reason to adapt the prefix
	*
	*
	* Old Syntax / 2009 Syntax / Box Syntax / WD
	* http://www.w3.org/TR/2009/WD-css3-flexbox-20090723/
	*
	* -webkit
	/* Functions */

	/*
	* $c1 == $c2
	*/
	@function isSameColor($c1, $c2)
	@return red($c1) == red($c2) and green($c1) == green($c2) and blue($c1) == blue($c2)

	/*
	* Get Middle Color