Variable - Revision history

Eibyer: /* Global Variables */

2018-09-12T15:27:22Z

‎Global Variables

Ipaterson: Described superglobals, global update behavior, initial value

2017-11-12T12:24:50Z

Described superglobals, global update behavior, initial value

ady624: ady624 moved page Variables to Variable without leaving a redirect

2017-05-04T14:12:53Z

ady624 moved page Variables to Variable without leaving a redirect

C1arkbar: /* System Variables */

2017-04-11T02:15:13Z

‎System Variables

ady624: /* Variable Data Types */

2017-03-26T01:29:49Z

‎Variable Data Types

ady624: /* Variable Data Types */

2017-03-26T01:28:41Z

‎Variable Data Types

ady624: Created page with "[some info on variables] ==Variable types== ===Local Variables=== Local variables are variables that are owned by an individual piston. They are unique to each piston and are..."

2017-03-25T22:23:50Z

Created page with "[some info on variables] ==Variable types== ===Local Variables=== Local variables are variables that are owned by an individual piston. They are unique to each piston and are..."

New page

[some info on variables]

==Variable types==
===Local Variables===
Local variables are variables that are owned by an individual piston. They are unique to each piston and are not shared among pistons. Multiple pistons can define local variables with the same name, they do not overlap.

===Global Variables===
Global variables are variables that are common to all pistons. They always start with the @ symbol and are available to any and all pistons. Any change made to a global variable by any piston is immediately available to all other pistons within the same webCoRE instance.

===System Variables===
System variables are local read-only variables that provide information about the environment. They cannot be written to and their values are not necessarily constant (the same) during the whole piston run

==Variable Data Types==
webCoRE supports a variety of data types, please review the [[webCoRE Variable Data Types]].

← Older revision		Revision as of 15:27, 12 September 2018
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	Any change made to a global variable by any piston is available for the next run of all other pistons within the same webCoRE instance. When a piston runs, a snapshot is taken of the global variables to ensure that they do not change unexpectedly while the piston is executing. For this reason, global variables cannot be used to "pass back a result" from the Execute piston action to its caller.		Any change made to a global variable by any piston is available for the next run of all other pistons within the same webCoRE instance. When a piston runs, a snapshot is taken of the global variables to ensure that they do not change unexpectedly while the piston is executing. For this reason, global variables cannot be used to "pass back a result" from the Execute piston action to its caller.
		+
		+
		+	Note: Define global variables on the upper right hand pane while editing a piston.

	===Superglobal Variables===		===Superglobal Variables===

← Older revision		Revision as of 01:29, 26 March 2017
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	==Variable Data Types==		==Variable Data Types==
−	webCoRE supports a variety of data types, please review the [[Variable ~~Data Types~~\|variable data types]].	+	webCoRE supports a variety of data types, please review the [[Variable data types\|variable data types]].

← Older revision		Revision as of 01:28, 26 March 2017
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	==Variable Data Types==		==Variable Data Types==
−	webCoRE supports a variety of data types, please review the [[~~webCoRE~~ Variable Data Types]].	+	webCoRE supports a variety of data types, please review the [[Variable Data Types\|variable data types]].

@@ Line 1: / Line 1: @@
-[some info on variables]
+A ''variable'' is a container for data that can be referenced or modified at a later time. Common uses of variables include
-==Variable types==
+* Tracking a value for use in the future
 ===Local Variables===
-Local variables are variables that are owned by an individual piston. They are unique to each piston and are not shared among pistons. Multiple pistons can define local variables with the same name, they do not overlap.
+Local variables are owned by an individual piston. They are unique to each piston and are not shared, so multiple pistons can safely define local variables with the same name.
 ===Global Variables===
-Global variables are variables that are common to all pistons. They always start with the @ symbol and are available to any and all pistons. Any change made to a global variable by any piston is immediately available to all other pistons within the same webCoRE instance.
+Global variables are variables that are common to all pistons. They always start with the @ symbol and are available to all pistons in the same webCoRE instance.
-===System Variables===
+==System Variables==
-System variables are local read-only variables that provide information about the environment and always have a $ preceeding them. They cannot be written to and their values are not necessarily constant (the same) during the whole piston run.
+System variables are local read-only variables that provide information about the environment and always have a $ prefix. They cannot be written to and their values are not necessarily constant (the same) during the whole piston run.
 ==Variable Data Types==
 webCoRE supports a variety of data types, please review the [[Variable data types|variable data types]].

← Older revision	Revision as of 14:12, 4 May 2017
(No difference)