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Where do gems install?
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216
Look at your gem environment.
In a terminal run gem env
You should see an entry INSTALLATION ...
Converting an integer to a hexadecimal string in Ruby
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You can give to_s a base other than 10:
10.to_s(16) #=> "a"
Note that in ruby 2.4 FixNum and BigNum were unified in the Integer class.
If you are using an older ruby check the documentation of FixNum#to_s and BigNum#to_s
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CSS z-index paradox flower
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91
Here's my attempt: http://jsfiddle.net/Kx2k5/1/
(successfully tested on Fx27, Ch33, IE9, Sf5.1.1...
Android RelativeLayout programmatically Set “centerInParent”
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401
Completely untested, but this should work:
View positiveButton = findViewById(R.id.positiveButt...
Android adding simple animations while setvisibility(view.Gone)
...view.animate().alpha(0.0f);
This fades it back in:
view.animate().alpha(1.0f);
This moves a View down by its height:
view.animate().translationY(view.getHeight());
This returns the View to its starting position after it has been moved somewhere else:
view.animate().translationY(0);
You ca...
App Inventor 2 参考文档 · App Inventor 2 中文网
...考文档
.doc-home { max-width: 1120px; margin: 0 auto; padding: 0 4px 36px; }
.doc-home-lead {
margin: 0 0 26px;
color: #57606a;
font-size: 16px;
line-height: 1.85;
}
.doc-home-lead a { color: #0969DA; }
.doc-cards {
display: grid;
gr...
How to use cURL to send Cookies?
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514
This worked for me:
curl -v --cookie "USER_TOKEN=Yes" http://127.0.0.1:5000/
I could see the...
Rotating a two-dimensional array in Python
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Consider the following two-dimensional list:
original = [[1, 2],
[3, 4]]
Lets break it down step by step:
>>> original[::-1] # elements of original are reversed
[[3, 4], [1, 2]]
This list is passed into zip() using argument unpacking, so the zip call ends...
Format date and time in a Windows batch script
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