大约有 19,000 项符合查询结果（耗时：0.0180秒） [XML]
How to get the position of a character in Python?
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@Sean : print statement was removed. Only the function form remains. Irritating, but the answer is simply to change that final line to: print( [pos for pos, char in enumerate(s) if char == c])
– The Nate
Aug 26 '16 at 5:14
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Why does the is operator return false when given null?
...ull.
expression can be cast to type. That is, a cast expression of the
form (type (expression) will complete without throwing an exception.
For more information, see 7.6.6 Cast expressions.
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How do I export a project in the Android studio?
...ue when building an APK to debug on an emulator or device. And when you perform a release build, such as Exporting APK, it will automatically set it to false. If on the other hand you specify a specific value in the manifest file, then the tools will always use it. This can lead to accidentally publ...
What are the minimum margins most printers can handle?
... Very often HP used 1/3, 1/2 inch or more (like "24 24 588 768" for Letter format). I remember having hacked HP PPDs and tuned them down to "6 6 606 786" (1/12 inch) before the physical boundaries of the device kicked in and enforced a real clipping of the page image.
Now, PCL and other language pr...
Rails Admin vs. ActiveAdmin [closed]
...ng RailsAdmin's model and association detection, and the awesome automatic forms. So I would be really happy if RailsAdmin was merged into ActiveAdmin to produce an extensible, yet automatic-by-default interface.
– ndbroadbent
Nov 29 '12 at 7:27
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How to print a double with two decimals in Android? [duplicate]
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yourTextView.setText(String.format("Value of a: %.2f", a));
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Delete forked repo from GitHub
...ed to type in your github username and the name of your repository in this format gitHubUsername/nameOfTheRepository and click on the button below which says: I understand the consequences, delete the repository
If you are having trouble to do it, below are the images that can be checked…
2020-0...
Clear form field after select for jQuery UI Autocomplete
I'm developing a form, and using jQuery UI Autocomplete. When the user selects an option, I want the selection to pop into a span appended to the parent <p> tag. Then I want the field to clear rather than be populated with the selection.
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How to fix: “UnicodeDecodeError: 'ascii' codec can't decode byte”
...tions:
# Explicit conversion without encoding
unicode('€')
# New style format string into Unicode string
# Python will try to convert value string to Unicode first
u"The currency is: {}".format('€')
# Old style format string into Unicode string
# Python will try to convert value string to Uni...
sendmail: how to configure sendmail on ubuntu? [closed]
...th subdirectory
mkdir auth
chmod 700 auth
#Create a file with your auth information to the smtp server
cd auth
touch client-info
#In the file, put the following, matching up to your smtp server:
AuthInfo:your.isp.net "U:root" "I:user" "P:password"
#Generate the Authentication database, make both ...