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How to insert a newline in front of a pattern?
...In general, for $ followed by a string literal in single quotes bash performs C-style backslash substitution, e.g. $'\t' is translated to a literal tab. Plus, sed wants your newline literal to be escaped with a backslash, hence the \ before $. And finally, the dollar sign itself shouldn't be quoted ...
Check whether an input string contains a number in javascript
My end goal is to validate an input field. The input may be either alphabetic or numeric.
12 Answers
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When to use SELECT … FOR UPDATE?
Please help me understand the use-case behind SELECT ... FOR UPDATE .
2 Answers
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Easiest way to upgrade eclipse 3.7 to 4.2 (Juno)
...e to it, short of installing a separate copy of juno and re-installing all my existing plugins from 3.7 into it?
4 Answers
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HTTPS with Visual Studio's built-in ASP.NET Development Server
Is there a way to access Visual Studio's built-in ASP.NET Development Server over HTTPS?
4 Answers
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Can I change the root EBS device of my amazon EC2 instance?
I have an EBS backed Amazon EC2 instance. I would like to change the root device on this instance. Can you please advise the best way to go about this?
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How do I reference an existing branch from an issue in GitHub?
Let's say I have a branch named feature/1 . And also issue #1. I want to link that branch to that issue.
5 Answers
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A field initializer cannot reference the nonstatic field, method, or property
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This line:
private dynamic defaultReminder =
reminder.TimeSpanText[TimeSpan.FromMinutes(15)];
You cannot use an instance variable to initialize another instance variable. Why? Because the compiler can rearrange these - ...
assign multiple variables to the same value in Javascript
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Nothing stops you from doing
moveUp = moveDown = moveLeft = moveRight = mouseDown = touchDown = false;
Check this example
var a, b, c;
a = b = c = 10;
console.log(a + b + c)
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throw new std::exception vs throw std::exception
while looking at some code I stumbled onto:
5 Answers
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