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Margin-Top push outer div down
...ins combine and are applied to the body: this forces the body's content to start below the applied collapsed margin in compliance with the box model.
There are situations where the margins do not collapse which might be worth playing around with (from Collapsing Margins):
* floated elements
* abso...
Python Threading String Arguments
...rget=processLine, args=(dRecieved,)) # <- note extra ','
processThread.start()
Or use brackets to make a list:
dRecieved = connFile.readline()
processThread = threading.Thread(target=processLine, args=[dRecieved]) # <- 1 element list
processThread.start()
If you notice, from the stack...
What is an index in SQL?
... statement to see if your query will make use of any index. This is a good start for troubleshooting performance problems. Read more here:
http://dev.mysql.com/doc/refman/5.0/en/explain.html
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Why do you need to put #!/bin/bash at the beginning of a script file?
...
If I'm already in bash, does it start another bash instance if it sees #!/bin/bash? What if I'm already in bash and I leave it out? Is there any difference?
– node ninja
Jan 23 '12 at 7:29
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How can I prevent the scrollbar overlaying content in IE10?
...tional CSS to *only* the Surface/desktop Windows 8. Look at
// our Getting Started page for more information on this bug.
//
// For more information, see the following:
//
// Issue: https://github.com/twbs/bootstrap/issues/10497
// Docs: http://getbootstrap.com/getting-started/#support-ie10-width
//...
How to read a file in reverse order?
... if segment is not None:
# If the previous chunk starts right from the beginning of line
# do not concat the segment to the last line of new chunk.
# Instead, yield the segment first
if buffer[-1] != '\n':
...
How to get an element by its href in jquery?
...="http://google.com"]');
Alternatively, if your interest is rather links starting with a certain URL, use the attribute-starts-with selector:
var allLinksToGoogle = $('a[href^="http://google.com"]');
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Vertically centering a div inside another div [duplicate]
... height: 200px;
}
Demo
♥ my favourite modern solution (flexbox)
I started to use flexbox more and more its also well supported now Its by far the easiest way.
CSS
.cn {
display: flex;
justify-content: center;
align-items: center;
}
Demo
More examples & possibilities:
Compare...
How do I insert a linebreak where the cursor is without entering into insert mode in Vim?
...make it permanent. Just omit the colon from the beginning, so the command starts with "map"
Enjoy!
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How do I concatenate two strings in C?
...red length to store merged string
int len = 1; // room for NULL
va_start(ap, count);
for(i=0 ; i<count ; i++)
len += strlen(va_arg(ap, char*));
va_end(ap);
// Allocate memory to concat strings
char *merged = calloc(sizeof(char),len);
int null_pos = 0;
// ...