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Grep only the first match and stop
... Unfortunately, it returns more than one -- in-fact two the last time I looked. It seems like I have too many arguments, especially without getting the desired outcome. :-/
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Use email address as primary key?
...ins.
If you store information about users in multiple tables, the foreign keys to the users table will be the e-mail address. That means that you store the e-mail address multiple times.
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How to check if a file exists from inside a batch file [duplicate]
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Chris JChris J
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Is “else if” faster than “switch() case”? [duplicate]
...h.
If a switch contains more than five items, it's implemented using a lookup table or a hash list. This means that all items get the same access time, compared to a list of if:s where the last item takes much more time to reach as it has to evaluate every previous condition first.
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How to check if running as root in a bash script
I'm writing a script that requires root level permissions, and I want to make it so that if the script is not run as root, it simply echoes "Please run as root." and exits.
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How to lock compiled Java classes to prevent decompilation?
How do I lock compiled Java classes to prevent decompilation?
9 Answers
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#ifdef vs #if - which is better/safer as a method for enabling/disabling compilation of particular s
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My initial reaction was #ifdef, of course, but I think #if actually has some significant advantages for this - here's why:
First, you can use DEBUG_ENABLED in preprocessor and compiled tests. Example - Often, I want longer timeouts when debug is enabled, so using #if, I can wr...
NSString with \n or line break
Does anyone know how to use line breaks in NSString? I need to do something like this -
10 Answers
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How to determine equality for two JavaScript objects?
...e equal. However, is there a way to tell if two objects are equal, much like the hash code value in Java?
64 Answers
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Why is document.write considered a “bad practice”?
I know document.write is considered bad practice; and I'm hoping to compile a list of reasons to submit to a 3rd party vendor as to why they shouldn't use document.write in implementations of their analytics code.
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