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Set line spacing

... Try the line-height property. For example, 12px font-size and 4px distant from the bottom and upper lines: line-height: 20px; /* 4px +12px + 4px */ Or with em units line-height: 1.7em; /* 1em = 12px in this case. 20/12 == 1.666666 */ ...
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How can I remove a specific item from an array?

I have an array of numbers and I'm using the .push() method to add elements to it. 97 Answers ...
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Difference between a Postback and a Callback

I keep on hearing this words ' callback ' and ' postback ' tossed around. What is the difference between two ? 6 Answers...
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Java String - See if a string contains only numbers and not letters

I have a string that I load throughout my application, and it changes from numbers to letters and such. I have a simple if statement to see if it contains letters or numbers but, something isn't quite working correctly. Here is a snippet. ...
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Java: Difference between the setPreferredSize() and setSize() methods in components

What is the main difference between setSize() and setPreferredSize() . Sometimes I used setSize() , sometimes setPreferredSize() , sometimes one does what I want, sometimes the other. ...
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How to initialize log4j properly?

...ile it used to initialize itself, which loggers / appenders got configured and how etc. The configuration file can be a java properties file or an xml file. Here is a sample of the properties file format taken from the log4j intro documentation page: log4j.rootLogger=debug, stdout, R log4j.appen...
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.bashrc/.profile is not loaded on new tmux session (or window) — why?

...he profile. The rules as to when bash runs certain files are complicated, and depend on the type of shell being started (login/non-login, interactive or not, and so forth), along with command line arguments and environment variables. You can see them in the man bash output, just look for INVOCATIO...
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What does 'predicate' mean in the context of computer science? [duplicate]

...ies a boolean function, i.e. a predicate. – Dimitris Andreou Jul 24 '10 at 17:25 7 This is used i...
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Are global variables in PHP considered bad practice? If so, why?

...l way. I generally have a variable that contains the system configuration, and when I nead to access this variable in a function, I do global $var; . ...
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Do you use NULL or 0 (zero) for pointers in C++?

... Here's Stroustrup's take on this: C++ Style and Technique FAQ In C++, the definition of NULL is 0, so there is only an aesthetic difference. I prefer to avoid macros, so I use 0. Another problem with NULL is that people sometimes mistakenly believe that it is differen...