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How to 'insert if not exists' in MySQL?
I started by googling, and found this article which talks about mutex tables.
10 Answers
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What does [].forEach.call() do in JavaScript?
I was looking at some snippets of code, and I found multiple elements calling a function over a node list with a forEach applied to an empty array.
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What and where are the stack and heap?
Programming language books explain that value types are created on the stack , and reference types are created on the heap , without explaining what these two things are. I haven't read a clear explanation of this. I understand what a stack is. But,
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How do I get the logfile from an Android device?
I would like to pull the log file from a device to my PC. How can I do that?
13 Answers
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What's the best three-way merge tool? [closed]
Subversion, Git, Mercurial and others support three-way merges (combining mine, theirs, and the "base" revision) and support graphical tools to resolve conflicts.
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From Arraylist to Array
I want to know if it is safe/advisable to convert from ArrayList to Array?
I have a text file with each line a string:
9 An...
java.lang.OutOfMemoryError: Java heap space in Maven
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How to iterate over a JavaScript object?
I have an object in JavaScript:
18 Answers
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how to prevent “directory already exists error” in a makefile when using mkdir
I need to generate a directory in my makefile and I would like to not get the "directory already exists error" over and over even though I can easily ignore it.
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Python: Checking if a 'Dictionary' is empty doesn't seem to work
I am trying to check if a dictionary is empty but it doesn't behave properly. It just skips it and displays ONLINE without anything except of display the message. Any ideas why ?
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