How do I know if a variable is set in Bash? For example, how do I check if the user gave the first parameter to a function? function a { # if $1 is set ? }
edit: oops, should have checked for duplicates first, Nate answered this question already here. Though you might want to note the slight difference in my version, which uses withUnsafeMutablePointer. You’re getting downvoted since people don’t like “How can I convert this Obj-C code to Swift” questions, however in this case it might be fair enough since this this specific conversion is particularl
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