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What are the pros and cons in use of global variables? In C C++, there is a widespread opinion that global variables are "bad" and should be avoided when possible Leaving aside the question whether this opinion is correct or not, what are the objective advantages and drawbacks that arise when using global variables?
Global variables in Java - Stack Overflow There are no global variables in Java, but there are global classes with public fields You can use static import feature of java 5 to make it look almost like global variables
How do I use extern to share variables between source files? Best way to declare and define global variables The clean, reliable way to declare and define global variables is to use a header file to contain an extern declaration of the variable The header is included by the one source file that defines the variable and by all the source files that reference the variable
When is it ok to use a global variable in C? - Stack Overflow Some good examples where global variables are used are singleton pattern implementations or register access in embedded systems On how to actually detect excessive usages of global variables: inspection, inspection, inspection Whenever I see a global variable I have to ask myself: Is that REALLY needed at a global scope?
Examples of the perils of globals in R and Stata - Stack Overflow All of the answers in this post gave R examples, and the OP wanted some Stata examples, as well So let me chime in with these Unlike R, Stata does take care of locality of its local macros (the ones that you create with local command), so the issue of "Is this this a global z or a local z that is being returned?" never comes up