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How do I programmatically determine if there are uncommitted changes?
In a Makefile, I'd like to perform certain actions if there are uncommitted changes (either in the working tree or the index). What's the cleanest and most efficient way to do that? A command that exits with a return value of zero in one case and non-zero in the other would suit my purposes.
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How to append a char to a std::string?
The following fails with the error prog.cpp:5:13: error: invalid conversion from ‘char’ to ‘const char*’
13 Answer...
Is there some way to PUSH data from web server to browser?
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Yes, what you're looking for is COMET http://en.wikipedia.org/wiki/Comet_(programming). Other good Google terms to search for are AJAX-push and reverse-ajax.
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Vertically centering a div inside another div [duplicate]
...nter;
align-items: center;
}
Demo
More examples & possibilities:
Compare all the methods on one pages
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Writing a dict to txt file and reading it back?
I am trying to write a dictionary to a txt file. Then read the dict values by typing the keys with raw_input . I feel like I am just missing one step but I have been looking for a while now.
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In a bootstrap responsive page how to center a div
...tstrap 4
Simpler vertical grid alignement with flex-box
@import url('https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css');
html,
body {
height: 100%
}
<div class="h-100 row align-items-center">
<div class="col" style="background:red">
TEXT
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What is the “realm” in basic authentication
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From RFC 1945 (HTTP/1.0) and RFC 2617 (HTTP Authentication referenced by HTTP/1.1)
The realm attribute (case-insensitive) is required for all
authentication schemes which issue a challenge. The realm value
(case-sensitive), in combi...
RabbitMQ / AMQP: single queue, multiple consumers for same message?
...t solve your problem, but could be useful for people to know. example here http://www.rabbitmq.com/tutorials/tutorial-two-java.html under Fair Dispatch
– Ommit
Jan 27 '15 at 22:35
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Provide an image for WhatsApp link sharing
...ll link to the current webpage address
<meta property="og:url" content="https://www.example.com/webpage/" />
Step 5: og:description
Maximum 65 characters
<meta property="og:description" content="description of your website/webpage">
Step 6: og:image
Image(JPG or PNG) with a size less...
How can I create a keystore?
...application.
For more information about Keytool, see the documentation at: http://docs.oracle.com/javase/6/docs/technotes/tools/windows/keytool.html
and for more information on signing Android apps go here: http://developer.android.com/tools/publishing/app-signing.html
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