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What does a tilde do when it precedes an expression?
I saw it in an answer, and I've never seen it before.
5 Answers
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Why do we copy then move?
I saw code somewhere in which someone decided to copy an object and subsequently move it to a data member of a class. This left me in confusion in that I thought the whole point of moving was to avoid copying. Here is the example:
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Interface vs Abstract Class (general OO)
I have had recently two telephone interviews where I've been asked about the differences between an Interface and an Abstract class. I have explained every aspect of them I could think of, but it seems they are waiting for me to mention something specific, and I don't know what it is.
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Fastest way to check if a string is JSON in PHP?
I need a really, really fast method of checking if a string is JSON or not. I feel like this is not the best way:
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How to convert an entire MySQL database characterset and collation to UTF-8?
How can I convert entire MySQL database character-set to UTF-8 and collation to UTF-8?
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Rails: Adding an index after adding column
Suppose I created a table table in a Rails app. Some time later, I add a column running:
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Disabled UIButton not faded or grey
In my iPhone app, I have a UIButton which I have created in Interface Builder. I can successfully enable and disable it like this in my code ...
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Text Editor which shows \r\n? [closed]
I'm looking for a text editor that can show me the actual carriage returns and newlines.
17 Answers
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Git workflow and rebase vs merge questions
I've been using Git now for a couple of months on a project with one other developer. I have several years of experience with SVN , so I guess I bring a lot of baggage to the relationship.
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LINQ with groupby and count
This is pretty simple but I'm at a loss:
Given this type of data set:
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