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What is this operator in MySQL?

...operator. Like the regular = operator, two values are compared and the result is either 0 (not equal) or 1 (equal); in other words: 'a' <=> 'b' yields 0 and 'a' <=> 'a' yields 1. Unlike the regular = operator, values of NULL don't have a special meaning and so it never yields NULL as a p...
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Changing overflow icon in the action bar

... can with a style, but you have to add it to the main Theme declaration. <resources> <!-- Base application theme. --> <style name="Your.Theme" parent="@android:style/Theme.Holo"> <!-- Pointer to Overflow style ***MUST*** go here or it will not work --> ...
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How to make a in Bootstrap look like a normal link in nav-tabs?

...re normal links. Not just any normal links, though; these are going in a <ul class="nav nav-tabs nav-stacked"> container. The markup will end up like this: ...
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The forked VM terminated without saying properly goodbye. VM crash or System.exit called

... I had the same problem and solved by adding: <argLine>-Xmx1024m -XX:MaxPermSize=256m</argLine> The whole plugin element is: <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-plugin</artifactId&gt...
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How to send an email using PHP?

...n it's possible. Remember mail function will not work on a Local server. <?php $to = 'nobody@example.com'; $subject = 'the subject'; $message = 'hello'; $headers = 'From: webmaster@example.com' . "\r\n" . 'Reply-To: webmaster@example.com' . "\r\n" . 'X-Mailer: PHP/' . phpversion(); ...
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What is the difference between List (of T) and Collection(of T)?

... Collection<T> is a customizable wrapper around IList<T>. While IList<T> is not sealed, it doesn't provide any customization points. Collection<T>'s methods are by default delegated to the standard IList<T> ...
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Grid of responsive squares

...pect ratio according to its width. At this point you can code : HTML : <div></div> CSS div { width: 30%; padding-bottom: 30%; /* = width for a square aspect ratio */ } Here is a simple layout example of 3*3 squares grid using the code above. With this technique, you can ...
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Are there any disadvantages to always using nvarchar(MAX)?

... I checked some articles and find useful test script from this: http://www.sqlservercentral.com/Forums/Topic1480639-1292-1.aspx Then changed it to compare between NVARCHAR(10) vs NVARCHAR(4000) vs NVARCHAR(MAX) and I don't find speed difference when using specified numbe...
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What are the specific differences between .msi and setup.exe file?

... my needs particularly well (i.e. automatically building installers with a script). – craftworkgames Feb 15 '18 at 1:50 ...
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How to repeat a “block” in a django template

...rocessor is in this case an overkill. You can easily do this: #base.html <html> <head> <title>{% block title %}My Cool Website{% endblock %}</title> </head> <body> {% block content %}{% endblock %} </body> </html> and...