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What does the exclamation mark do before the function?
...ight be tempted to try this:
function () {}()
but it results in a SyntaxError.
Using the ! operator before the function causes it to be treated as an expression, so we can call it:
!function () {}()
This will also return the boolean opposite of the return value of the function, in this case t...
Pretty printing XML with javascript
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I get an error, but the error has no message. It happens in the fiddle too, using firefox.
– Tomáš Zato - Reinstate Monica
Aug 23 '18 at 15:51
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Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
I am getting the following error when I try to connect to mysql:
34 Answers
34
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Escape quote in web.config connection string
...in the string and the query string can't be parsed resulting in the stated error. If it were that easy I wouldn't have asked here ;-)
– Sebastian P.R. Gingter
Jul 5 '10 at 8:06
1
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Renaming columns in pandas
...x x
1 x x x x x
2 x x x x x
From v0.25, you can also specify errors='raise' to raise errors if an invalid column-to-rename is specified. See v0.25 rename() docs.
REASSIGN COLUMN HEADERS
Use df.set_axis() with axis=1 and inplace=False (to return a copy).
df2 = df.set_axis(['V', 'W', 'X...
How to save an activity state using save instance state?
I've been working on the Android SDK platform, and it is a little unclear how to save an application's state. So given this minor re-tooling of the 'Hello, Android' example:
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Could not load file or assembly or one of its dependencies
...dll (in my case NativeInterfaces.dll)
You can see one or more dll with the error in red Error opening file...
It means that this dll is missing in your system; in my case the dll name is MSVCR71.DLL
You can download missings dll from google and copy in right path (in my case c:\windows\system32)
A...
How do you find the row count for all your tables in Postgres
I'm looking for a way to find the row count for all my tables in Postgres. I know I can do this one table at a time with:
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filename and line number of python script
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NameError: global name '__file__' is not defined on my Python interpreter: Python 2.7.6 (default, Sep 26 2014, 15:59:23). See stackoverflow.com/questions/9271464/…
– bgoodr
May 5 '17 at 17...
What exactly is Spring Framework for? [closed]
I hear a lot about Spring , people are saying all over the web that Spring is a good framework for web development. What exactly is Spring Framework for?
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