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How to access random item in list?
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410
Create an instance of Random class somewhere. Note that it's pretty important not to create a n...
Is iterating ConcurrentHashMap values thread safe?
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Will
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answered Sep 22 '10 at 11:17
WaldheinzWaldheinz...
Git says “Warning: Permanently added to the list of known hosts”
... filename /etc/ssh/ssh_known_hosts
Warning: Permanently added 'github.com,207.97.227.239' (RSA) to the list of known hosts.
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Count the number of commits on a Git branch
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370
To count the commits for the branch you are on:
git rev-list --count HEAD
for a branch
git r...
Eclipse add Tomcat 7 blank server name
... in Ubuntu. When I click "Add new server" in Eclipse and select "Tomcat v7.0 Server", the field "Server Name" is blank and I cannot type in anything in that textbox as shown below:
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Unsafe JavaScript attempt to access frame with URL
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edited Jan 7 '15 at 0:04
answered Dec 5 '10 at 13:15
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Size-limited queue that holds last N elements in Java
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+50
Apache commons collections 4 has a CircularFifoQueue<> which is what you are looking for. Quoting the javadoc:
CircularFifoQ...
Java array reflection: isArray vs. instanceof
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204
In most cases, you should use the instanceof operator to test whether an object is an array.
G...
When is JavaScript synchronous?
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answered Jan 10 '10 at 1:08
cletuscletus
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Detect backspace in empty UITextField
...ork. Try setting the text field's text to a zero width space character \u200B. When backspace is pressed on a text field that appears empty, it will actually delete your space. Then you can just reinsert the space.
May not work if the user manages to move the caret to the left of the space.
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