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How to remove all listeners in an element? [duplicate]
...so clear event listeners on all child elements of the node in question, so if you want to preserve that you'll have to resort to explicitly removing listeners one at a time.
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How to pass a user defined argument in scrapy spider
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The above code is only partially working for me. For eg. If I define domain using self.domain, I'm still not able to access it outside the __init__ method. Python throws a not defined error. BTW, why have you omitted the super call? PS. I'm working with the CrawlSpider class
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How to set the java.library.path from Eclipse
...or a whole Eclipse Project? I'm using a Java library that relies on OS specific files and need to find a .dll/ .so/ .jnilib . But the Application always exits with an error message that those files are not found on the library path.
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launch sms application with an intent
... an activity with the following attributes in its intent filter in your manifest? <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" />
– jqpubliq
Mar 3 '10...
Why use make over a shell script?
...shell script, it would be a lot more work (explicitly checking the last-modified dates on all the files, etc.) The only obvious alternative with a shell script is to rebuild everything every time. For tiny projects this is a perfectly reasonable approach, but for a big project a complete rebuild cou...
How to find the size of an array in postgresql
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As vyegorov mentioned, array_length will do the trick. Or if you know that the array is 1-dimensional (which is likely) and are running PostgreSQL 9.4 or higher, you can use cardinality:
SELECT cardinality(id) FROM example;
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How can I do division with variables in a Linux shell?
...ught you were trying to operate on alphabetic characters (ie non-integer)
If you are using the Bash shell, you can achieve the same result using expression syntax:
echo $((x / y))
Or:
z=$((x / y))
echo $z
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How to swap files between windows in VIM?
...one, etc.)
Ctrl-W, x - swap the current window with the next one
Ctrl-W, Shift-H - move this window to the far left
Ctrl-W, Shift-K - move this window to the top
(and similarly for Ctrl-W, Shift-J and Ctrl-W, Shift-L). See:
:help window-moving
for more information.
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ssh “permissions are too open” error
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Keys need to be only readable by you:
chmod 400 ~/.ssh/id_rsa
If Keys need to be read-writable by you:
chmod 600 ~/.ssh/id_rsa
600 appears to be fine as well (in fact better in most cases, because you don't need to change file permissions later to edit it).
The relevant portion from...
Delete all local git branches
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The 'git branch -d' subcommand can delete more than one branch. So, simplifying @sblom's answer but adding a critical xargs:
git branch -D `git branch --merged | grep -v \* | xargs`
or, further simplified to:
git branch --merged | grep -v \* | xargs git branch -D
Importantly, as noted by @A...