Two principles of CMake you have to keep in mind: CMake is a script language and arguments are evaluated after the variables are expanded CMake differentiates between normal strings and list variables (strings with semicolon delimiters) Examples set(_my_text “A B C”) with message(“${_my_text}”) would give A B C set(_my_list A B C) with message(“${_my_list}”) would … Read more
A. Use the global keyword to import from the application scope. $var = “01-01-10”; function checkdate(){ global $var; if(“Condition”){ $var = “01-01-11”; } } checkdate(); B. Use the $GLOBALS array. $var = “01-01-10”; function checkdate(){ if(“Condition”){ $GLOBALS[‘var’] = “01-01-11”; } } checkdate(); C. Pass the variable by reference. $var = “01-01-10”; function checkdate(&$funcVar){ if(“Condition”){ $funcVar … Read more
In the first case the global keyword is pointless, so that is not correct. Defining a variable on the module level makes it a global variable, you don’t need the global keyword. The second example is correct usage. However, the most common usage for global variables are without using the global keyword anywhere. The global … Read more
Try this: add to the head of the xamlfile xmlns:System=”clr-namespace:System;assembly=mscorlib” Then Add this to the resource section: <System:Double x:Key=”theMargin”>2.35</System:Double> Lastly, use a thickness on the margin: <Button Content=”Next”> <Button.Margin> <Thickness Top=”{StaticResource theMargin}” Left=”0″ Right=”0″ Bottom =”{StaticResource theMargin}” /> </Button.Margin> </Button> A lot of system types can be defined this way: int, char, string, DateTime, etc … Read more
Every variable in Java is a reference. So when you do SomeClass s2 = s1; you just point s2 to the same object as s1 points to. You are actually assigning the value of the reference s1 (which points to an instance of SomeClass) to s2. If you modify s1, s2 will be modified as … Read more
Do I really have to create an NSString for “Wrong”? No, why not just do: if([statusString isEqualToString:@”Wrong”]){ //doSomething; } Using @”” simply creates a string literal, which is a valid NSString. Also, can I compare the value of a UILabel.text to a string without assigning the label value to a string? Yes, you can do … Read more
As a C++ developer you can think of Python variables as pointers. Thus when you write spam = 100, this means that you “assign the pointer”, which was previously pointing to the object 42, to point to the object 100. Earlier on, cheese was assigned to point to the same object as spam pointed to, … Read more
Value vis-a-vis Reference Types Variables in C# are in 1 of 2 groups. Value types or Reference types. Types like int and DateTime are value types. In contrast, any class you create is a reference type. C# strings are also a reference type. Most things in the .NET framework are reference types. Parts of a … Read more
a.getClass().getName()
You can’t use statements in the middle of your class. It have to be either in a block or in the same line as your declaration. The usual ways to do what you want are those : The initialization during the declaration public class MyClass{ private int i = 0; } Usually it’s a good … Read more