Flow control - Revision history

https://wiki.beyondunreal.com/w/index.php?action=history&feed=atom Flow control - Revision history 2017-11-18T03:02:33Z Revision history for this page on the wiki MediaWiki 1.25.1 https://wiki.beyondunreal.com/Flow_control?diff=43244&oldid=prev Eliot: I think this page should copy all contents of the statement pages to here just like the Types and Literals page. 2010-05-15T07:10:01Z

<p>I think this page should copy all contents of the statement pages to here just like the Types and Literals page.</p> <a href="https://wiki.beyondunreal.com/Flow_control?diff=43244&oldid=43243">Show changes</a>

Eliot https://wiki.beyondunreal.com/Flow_control?diff=43243&oldid=prev Eliot: Added navbox 2010-05-15T06:44:04Z

<p>Added navbox</p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;'> <td colspan='2' style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 06:44, 15 May 2010</td> </tr><tr><td colspan="2" class="diff-lineno" id="L212" >Line 212:</td> <td colspan="2" class="diff-lineno">Line 212:</td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>After you write code following a "case" label, you must use a "break" statement to cause execution to go past the end of the "switch" statement. If you don't use a "break", execution "falls through" to the next "case" handler.</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>After you write code following a "case" label, you must use a "break" statement to cause execution to go past the end of the "switch" statement. If you don't use a "break", execution "falls through" to the next "case" handler.</div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{navbox unrealscript}}</ins></div></td></tr> </table>

Eliot https://wiki.beyondunreal.com/Flow_control?diff=32984&oldid=prev Ikuto at 17:17, 6 September 2008 2008-09-06T17:17:34Z

<p></p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;'> <td colspan='2' style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 17:17, 6 September 2008</td> </tr><tr><td colspan="2" class="diff-lineno" id="L1" >Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{stub}}</ins></div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>UnrealScript supports all the standard flow-control statements of C/C++/Java:  </div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>UnrealScript supports all the standard flow-control statements of C/C++/Java:  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr> </table>

Ikuto https://wiki.beyondunreal.com/Flow_control?diff=32981&oldid=prev Ikuto: New page: UnrealScript supports all the standard flow-control statements of C/C++/Java: == For Loops == "For" loops let you cycle through a loop as long as some condition is met. For example: <u... 2008-09-06T17:01:13Z

<p>New page: UnrealScript supports all the standard flow-control statements of C/C++/Java: == For Loops == "For" loops let you cycle through a loop as long as some condition is met. For example: <u...</p> <p><b>New page</b></p><div>UnrealScript supports all the standard flow-control statements of C/C++/Java: <br /> <br /> == For Loops ==<br /> <br /> "For" loops let you cycle through a loop as long as some condition is met. For example:<br /> <br /> <uscript>// Example of "for" loop.<br /> function ForExample()<br /> {<br /> local int i;<br /> log( "Demonstrating the for loop" );<br /> for( i=0; i<4; i++ )<br /> {<br /> log( "The value of i is " $ i );<br /> }<br /> log( "Completed with i=" $ i);<br /> }</uscript><br /> <br /> The output of this loop is:<br /> <br /> Demonstrating the for loop<br /> The value of i is 0<br /> The value of i is 1<br /> The value of i is 2<br /> The value of i is 3<br /> Completed with i=4<br /> <br /> In a for loop, you must specify three expressions separated by semicolons. The first expression is for initializing a variable to its starting value. The second expression gives a condition which is checked before each iteration of the loop executes; if this expression is true, the loop executes. If it's false, the loop terminates. The third condition gives an expression which increments the loop counter.<br /> <br /> Though most "for" loop expressions just update a counter, you can also use "for" loops for more advanced things like traversing linked lists, by using the appropriate initialization, termination, and increment expressions.<br /> <br /> In all of the flow control statements, you can either execute a single statement, without brackets, as follows:<br /> <br /> <uscript>for( i=0; i<4; i++ )<br /> log( "The value of i is " $ i );</uscript><br /> <br /> Or you can execute multiple statements, surrounded by brackets, like this: <br /> <br /> <uscript>for( i=0; i<4; i++ )<br /> {<br /> log( "The value of i is" );<br /> log( i );<br /> }</uscript><br /> <br /> == Do-While Loops ==<br /> <br /> "Do"-"Until" loops let you cycle through a loop while some ending expression is true. Note that Unreal's do-until syntax differs from C/Java (which use do-while).<br /> <br /> <uscript>// Example of "do" loop.<br /> function DoExample()<br /> {<br /> local int i;<br /> log( "Demonstrating the do loop" );<br /> do<br /> {<br /> log( "The value of i is " $ i );<br /> i = i + 1;<br /> } until( i == 4 );<br /> log( "Completed with i=" $ i);<br /> }</uscript><br /> <br /> The output of this loop is:<br /> <br /> Demonstrating the do loop<br /> The value of i is 0<br /> The value of i is 1<br /> The value of i is 2<br /> The value of i is 3<br /> Completed with i=4<br /> <br /> == While Loops ==<br /> <br /> "While" loops let you cycle through a loop while some starting expression is true.<br /> <br /> <uscript>// Example of "while" loop.<br /> function WhileExample()<br /> {<br /> local int i;<br /> log( "Demonstrating the while loop" );<br /> while( i < 4 )<br /> {<br /> log( "The value of i is " $ i );<br /> i = i + 1;<br /> }<br /> log( "Completed with i=" $ i);<br /> }</uscript><br /> <br /> The output of this loop is:<br /> <br /> Demonstrating the do loop<br /> The value of i is 0 The value of i is 1<br /> The value of i is 2<br /> The value of i is 3<br /> Completed with i=4<br /> <br /> == Break ==<br /> <br /> The "break" command exits out of the nearest loop ("For", "Do", or "While").<br /> <br /> <uscript>// Example of "while" loop.<br /> function WhileExample()<br /> {<br /> local int i;<br /> log( "Demonstrating break" );<br /> for( i=0; i<10; i++ )<br /> {<br /> if( i == 3 )<br /> break;<br /> log( "The value of i is " $ i );<br /> }<br /> log( "Completed with i=" $ i );<br /> }</uscript><br /> <br /> The output of this loop is:<br /> <br /> Demonstrating break<br /> The value of i is 0<br /> The value of i is 1<br /> The value of i is 2<br /> Completed with i=3<br /> <br /> == Goto ==<br /> <br /> The "Goto" command goes to a label somewhere in the current function or state.<br /> <br /> <uscript>// Example of "goto".<br /> function GotoExample()<br /> {<br /> log( "Starting GotoExample" );<br /> goto Hither;<br /> Yon:<br /> log( "At Yon" );<br /> goto Elsewhere;<br /> Hither:<br /> log( "At Hither" );<br /> goto Yon;<br /> Elsewhere:<br /> log( "At Elsewhere" );<br /> }</uscript><br /> <br /> The output is:<br /> <br /> Starting GotoExample<br /> At Hither<br /> At Yon<br /> At Elsewhere<br /> <br /> == Conditional Statements ==<br /> <br /> "If", "Else If", and "Else" let you execute code if certain conditions are met.<br /> <br /> <uscript>// Example of simple "if".<br /> if( LightBrightness < 20 )<br /> log( "My light is dim" );<br /> <br /> // Example of "if-else".<br /> if( LightBrightness < 20 )<br /> log( "My light is dim" );<br /> else<br /> log( "My light is bright" );<br /> <br /> // Example if "if-else if-else".<br /> if( LightBrightness < 20 )<br /> log( 'My light is dim" );<br /> else if( LightBrightness < 40 )<br /> log( "My light is medium" );<br /> else if( LightBrightness < 60 )<br /> log( "My light is kinda bright" );<br /> else<br /> log( "My light is very bright" );<br /> <br /> // Example if "if" with brackets.<br /> <br /> if( LightType == LT_Steady )<br /> {<br /> log( "Light is steady" );<br /> }<br /> else<br /> {<br /> log( "Light is not steady" );<br /> }</uscript><br /> <br /> == Case Statements ==<br /> <br /> "Switch", "Case", "Default", and "Break" let you handle lists of conditions easily.<br /> <br /> <uscript>// Example of switch-case.<br /> function TestSwitch()<br /> {<br /> // Executed one of the case statements below, based on<br /> // the value in LightType.<br /> switch( LightType )<br /> {<br /> case LT_None:<br /> log( "There is no lighting" );<br /> break;<br /> case LT_Steady:<br /> log( "There is steady lighting" );<br /> break;<br /> case LT_Backdrop:<br /> log( "There is backdrop lighting" );<br /> break;<br /> <br /> default:<br /> log( "There is dynamic" );<br /> break;<br /> }<br /> }</uscript><br /> <br /> A "switch" statement consists of one or more "case" statements, and an optional "default" statement. After a switch statement, execution goes to the matching "case" statement if there is one; otherwise execution goes to the "default" statement; otherwise execution continues past the end of the "select" statement.<br /> <br /> After you write code following a "case" label, you must use a "break" statement to cause execution to go past the end of the "switch" statement. If you don't use a "break", execution "falls through" to the next "case" handler.</div>

Ikuto