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php Replacing multiple spaces with a single space [duplicate]
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Use preg_replace() and instead of [ \t\n\r] use \s:
$output = preg_replace('!\s+!', ' ', $input);
From Regular Expression Basic Syntax Reference:
\d, \w and \s
Shorthand character classes matching
digits, word characters (letters,...
python ? (conditional/ternary) operator for assignments [duplicate]
C and many other languages have a conditional (aka ternary) operator. This allows you to make very terse choices between two values based on the truth of a condition, which makes expressions, including assignments, very concise.
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Eclipse keyboard shortcut to indent source code to the left?
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In my copy, Shift + Tab does this, as long as I have a code selection, and am in a code window.
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IntelliJ: How to auto-highlight variables like in Eclipse
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Using 2016.2 and this doesn't work at all. The setting was on by default, but it's not highlighting the variable my cursor is on (unless it is somehow the same colour as the non-highlight?)
– Adam
No...
Get boolean from database using Android and SQLite
How can I obtain the value of a boolean field in an SQLite database on Android?
10 Answers
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Good beginners tutorial to socket.io? [closed]
I am very new to the world of webdevelopment and jumped into the bandwagon because I find the concept of HTML5 very interesting. I am fairly confident on working with canvas and would now like to move over to websockets part of it. I have come to understand socket.io is by far the framework to work ...
Converting string to numeric [duplicate]
I've imported a test file and tried to make a histogram
2 Answers
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Remove and Replace Printed items [duplicate]
...ems you have printed in Python - not from the Python GUI, but from the command prompt.
e.g.
3 Answers
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What are the most common font-sizes for H1-H6 tags [closed]
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The HTML 4 recommendation for H6 has been ignored and 0.67em won; nowdays WebKit and FF use same em sizes as IE8. w3.org/TR/html-markup/h6.html also says "typical" display is 0.67em.
– Beni Cherniavsky-Paskin
Nov 14 '13 at 4:29
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How do I combine two data-frames based on two columns? [duplicate]
I know I can use the plyr and its friends to combine dataframes, and merge as well, but so far I don't know how to merge two dataframes with multiple columns based on 2 columns?
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