大约有 40,000 项符合查询结果(耗时:0.0513秒) [XML]
Python loop counter in a for loop [duplicate]
In my example code below, is the counter = 0 really required, or is there a better, more Python, way to get access to a loop counter? I saw a few PEPs related to loop counters, but they were either deferred or rejected ( PEP 212 and PEP 281 ).
...
Scala: write string to file in one statement
...
Per the comment above, while this is a one liner, it is unsafe. If you want more safety while having more options around location and/or buffering the input, see the answer I just posted on a similar thread: stackoverflow.com/a/34277...
Show or hide element in React
...ent.querySelector("#container"))
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.13.1/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.13.1/umd/react-dom.production.min.js"></script>
<div id="containe...
What is a 'thunk'?
...compatibility reasons
I have usually seen it used in the third context.
http://en.wikipedia.org/wiki/Thunk
share
|
improve this answer
|
follow
|
...
CSS: Truncate table cells, but fit as much as possible
...nowrap;">Less content here.</td>
</tr>
</table>
http://jsfiddle.net/7CURQ/
share
|
improve this answer
|
follow
|
...
How do I run all Python unit tests in a directory?
...code or use third-party tools to do this; recursive test execution via the command line is built-in. Put an __init__.py in your test directory and:
python -m unittest discover <test_directory>
# or
python -m unittest discover -s <directory> -p '*_test.py'
You can read more in the pyt...
What is the difference between Non-Repeatable Read and Phantom Read?
...er A runs the same query twice.
In between, User B runs a transaction and commits.
Non-repeatable read: The A row that user A has queried has a different value the second time.
Phantom read: All the rows in the query have the same value before and after, but different rows are being selected (becau...
Convert int to string?
How can I convert an int datatype into a string datatype in C#?
11 Answers
11
...
Remove new lines from string and replace with one empty space
Want to remove all new lines from string.
19 Answers
19
...
Recommended way to embed PDF in HTML?
... renderer for PDF documents without any third-party plugins.
Online demo:
http://mozilla.github.com/pdf.js/web/viewer.html
GitHub:
https://github.com/mozilla/pdf.js
share
|
improve this answer
...