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Checking for an empty field with MySQL

I've wrote a query to check for users with certain criteria, one being they have an email address. 7 Answers ...
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Copy entire contents of a directory to another using php

I tried to copy the entire contents of the directory to another location using 15 Answers ...
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Linear Layout and weight in Android

I always read about this funny weight value in the Android documentations. Now I want to try it for the first time but it isn't working at all. ...
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Idiomatic way to wait for multiple callbacks in Node.js

Suppose you need to do some operations that depend on some temp file. Since we're talking about Node here, those operations are obviously asynchronous. What is the idiomatic way to wait for all operations to finish in order to know when the temp file can be deleted? ...
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How to check for the type of a template parameter?

Suppose I have a template function and two classes 4 Answers 4 ...
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Android: TextView automatically truncate and replace last 3 char of String

If a String is longer than the TextView 's width it automatically wraps onto the next line. I can avoid this by using android:singleLine (deprecated) or by setting android:inputType="text" . What I need now is something that replaces the last 3 characters of my String with " ... ". Since I'm...
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iOS 7 parallax effect in my view controller

I'm developing an app for iOS 7 in Objective-C. I've got a screen in my app with a few buttons and a pretty background image. (It's a simple xib with UIButtons on top of a UIImageView .) ...
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Set the value of a variable with the result of a command in a Windows batch file

When working in a Bash environment, to set the value of a variable as the result of a command, I usually do: 5 Answers ...
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last day of month calculation

I am having issues with the calculation of when the next Last Day of the Month is for a notification which is scheduled to be sent. ...
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Convert timestamp in milliseconds to string formatted time in Java

I am trying to convert a long value ( number of milliseconds elapsed from 1/1/1970 i.e. Epoch ) to time of format h:m:s:ms . ...