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Rails server says port already used, how to kill that process?
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Assuming you're looking to kill whatever is on port 3000 (which is what webrick normally uses), type this in your terminal to find out the PID of the process:
$ lsof -wni tcp:3000
Then, use the number in the PID column to kill the process:
$ kill -9 PID
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Convert character to ASCII numeric value in java
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306
Very simple. Just cast your char as an int.
char character = 'a';
int ascii = (int) chara...
Cross-platform way of getting temp directory in Python
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395
That would be the tempfile module.
It has functions to get the temporary directory, and also ...
What should be the values of GOPATH and GOROOT?
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323
GOPATH is discussed in the cmd/go documentation:
The GOPATH environment variable lists pl...
Swift class introspection & generics
...type value requires an '@required' initializer
Y().me()
^
<REPL>:3:7: note: selected implicit initializer with type '()'
class X {
^
It took me a while to figure out what this means… turns out it wants the class to have a @required init()
class X {
func me() {
pri...
How can I enable the Windows Server Task Scheduler History recording?
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365
Step 1: Open an elevated Task Scheduler (ie. right-click on the Task Scheduler icon and choos...
Using the “animated circle” in an ImageView while loading stuff
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answered May 28 '14 at 23:27
user1032613user1032613
14.2k1313 gold badges6262 silver badges7878 bronze badges
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Insert text into textarea with jQuery
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edited Jun 3 '09 at 19:31
answered Jun 3 '09 at 19:22
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Why are arrays of references illegal?
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Answering to your question about standard I can cite the C++ Standard §8.3.2/4:
There shall be no references to references, no arrays of references, and no pointers to references.
share
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i...
SQL: How to properly check if a record exists
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answered Nov 23 '10 at 8:23
Martin SchapendonkMartin Schapendonk
10.5k33 gold badges1515 silver badges2424 bronze badges
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