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How to install a gem or update RubyGems if it fails with a permissions error
...r their own use. While it's OK to make minor modifications to that if you know what you're doing, because you are not sure about the permissions problem, I'd say it's not a good idea to continue along that track.
Instead, I'll strongly suggest you look into using either rbenv or RVM to manage a sep...
How to append text to an existing file in Java?
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Are you doing this for logging purposes? If so there are several libraries for this. Two of the most popular are Log4j and Logback.
Java 7+
If you just need to do this one time, the Files class makes this easy:
try {
Files.write(Paths.get("myfile.txt"), "the ...
RecyclerView onClick
...se a recyclerview in another fragment/activity, the adapter/viewholder are now defining the logic of the clicks instead of whatever is containing them. The clicks should really be handled directly or indirectly by the containing instance. It seems that a touch listener is the only effective way to g...
Determining if a variable is within range?
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if i.between?(1, 10)
do thing 1
elsif i.between?(11,20)
do thing 2
...
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How do I use NSTimer?
...led "Companion Guides", which lists guides for the topic being documented (if any exist). For example, with NSTimer, the documentation lists two companion guides:
Timer Programming Topics for Cocoa
Threading Programming Guide
For your situation, the Timer Programming Topics article is likely to ...
JavaScript: filter() for Objects
... 5 has the filter() prototype for Array types, but not Object types, if I understand correctly.
15 Answers
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Server.UrlEncode vs. HttpUtility.UrlEncode
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" " ==> "%20"
"100% true" ==> "100%%20true" (ok, your url is broken now)
"test A.aspx#anchor B" ==> "test%20A.aspx#anchor%20B"
"test A.aspx?hmm#anchor B" ==> "test%20A.aspx?hmm#anchor B" (note the difference with the previous escape sequence!)
It also has the lovelily specific MSDN d...
How do I activate C++ 11 in CMake?
... 3.1 introduced the CMAKE_CXX_STANDARD variable that you can use. If you know that you will always have CMake 3.1 available, you can just write this in your top-level CMakeLists.txt file, or put it right before any new target is defined:
set (CMAKE_CXX_STANDARD 11)
If you need to support older v...
Inline labels in Matplotlib
... less than 0.2). See this question for a particularly nasty example. Right now, the code does not intelligently identify this scenario and re-arrange the labels, however there is a reasonable workaround. The labelLines function takes the xvals argument; a list of x-values specified by the user inste...
Why doesn't CSS ellipsis work in table cell?
...width: 50px;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
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