大约有 16,380 项符合查询结果(耗时:0.0300秒) [XML]
argparse store false if unspecified
How can I store false if -auto is unspecified? I can faintly remember that this way, it stores None if unspecified
4 Answ...
Python TypeError: not enough arguments for format string
Here's the output. These are utf-8 strings I believe... some of these can be NoneType but it fails immediately, before ones like that...
...
“unary operator expected” error in Bash if condition
...
If you know you're always going to use bash, it's much easier to always use the double bracket conditional compound command [[ ... ]], instead of the Posix-compatible single bracket version [ ... ]. Inside a [[ ... ]] compound, word-splitting and pathname expansion are not ...
Escape double quotes in a string
...
No.
Either use verbatim string literals as you have, or escape the " using backslash.
string test = "He said to me, \"Hello World\" . How are you?";
The string has not changed in either case - there is a single escaped " in it. This is just a w...
Android Studio needs JDK 7 for Android-L mac
I was trying to look how my app looks in material design and I would like to use the new cards lib.
My Problem is, that it's giving me this error within my gradle file and I need to fix that.
...
Tying in to Django Admin's Model History
...
The admin history is just an app like any other Django app, with the exception being special placement on the admin site.
The model is in django.contrib.admin.models.LogEntry.
When a user makes a change, add to the log like this ...
How to Convert all strings in List to lower case using LINQ?
...pet yesterday in one of the responses here on StackOverflow that intrigued me. It was something like this:
5 Answers
...
How do I select the parent form based on which submit button is clicked?
I have a web page with 3 forms on it. Not nested, just one after the other (they are almost identical, just one hidden variable that's different). A user will only fill in one form, and I'd like to validate/etc all the forms with only one JS script.
...
In Python, how do I create a string of n characters in one line of code?
...
To simply repeat the same letter 10 times:
string_val = "x" * 10 # gives you "xxxxxxxxxx"
And if you want something more complex, like n random lowercase letters, it's still only one line of code (not counting the import state...
How to print full stack trace in exception?
For example, in one place...
3 Answers
3
...