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Should I use string.isEmpty() or “”.equals(string)?
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@David dead link; here's a live one docjar.com/html/api/java/lang/String.java.html#1011
– Matt Ball
Apr 8 '12 at 14:31
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Appending a line to a file only if it does not already exist
...tected file, @drAlberT and @rubo77 's answers might not work for you since one can't sudo >>. A similarly simple solution, then, would be to use tee --append (or, on MacOS, tee -a):
LINE='include "/configs/projectname.conf"'
FILE=lighttpd.conf
grep -qF "$LINE" "$FILE" || echo "$LINE" | sudo...
Installing in Homebrew errors
... using that line right there. I had to do this myself after using the ruby one-liner at the top of the official docs to install Homebrew. Worked like a charm for me. It ought to be the only time you'll ever need to sudo with Homebrew.
I'm not sure if the ruby one-liner does this. If it did, then so...
Do interfaces inherit from Object class in java
...od of object class on interface instance
An interface implicitly declared one method for each public method in Object. Thus the equals method is implicitly declared as a member in an interface (unless it already inherits it from a superinterface).
This is explained in detail in the Java Language Sp...
What is the result of % in Python?
...rst converted to a common type. A zero right argument raises the ZeroDivisionError exception. The arguments may be floating point numbers, e.g., 3.14%0.7 equals 0.34 (since 3.14 equals 4*0.7 + 0.34.) The modulo operator always yields a result with the same sign as its second operand (or zero); the a...
Adjust UILabel height depending on the text
...ng setting the preffered width first, but I assumed that had already been done with the init of the UILabel.
– DonnaLea
Jul 6 '11 at 1:42
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How can I find an element by CSS class with XPath?
...ion to clean up stray whitespace characters around the class name (as mentioned by @Terry):
//div[contains(concat(' ', normalize-space(@class), ' '), ' Test ')]
Note that in all these versions, the * should best be replaced by whatever element name you actually wish to match, unless you wish to ...
How to change CSS using jQuery?
... @Ender: using css() all the css is reset and only the css mentioned in this function persists. How can I only add css which is to be changed and retain previous css ?
– SimpleGuy
Sep 2 at 5:46
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Want to exclude file from “git diff”
...restingly this approach does not work with git diff --stat. In that case, one could use git diff ... | diffstat as a workaround.
– ddkilzer
Nov 6 '13 at 19:42
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How to remove duplicate values from a multi-dimensional array in PHP
... I guess this is more quick and more clear solution, than the accepted one! lets vote for this one! :) Hmmm on php site we can see that it is not so quick, as I thought...
– Andron
May 5 '15 at 10:50
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