大约有 11,000 项符合查询结果（耗时：0.0168秒） [XML]
Checking if a field contains a string
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Here's what you have to do if you are connecting MongoDB through Python
db.users.find({"username": {'$regex' : '.*' + 'Son' + '.*'}})
you may also use a variable name instead of 'Son' and therefore the string concatenation.
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How to find the 'sizeof' (a pointer pointing to an array)?
... really a static array. The macro is used in real code though, e.g. in the Linux kernel headers although it may be slightly different than the one below:
#if !defined(ARRAY_SIZE)
#define ARRAY_SIZE(x) (sizeof((x)) / sizeof((x)[0]))
#endif
int main()
{
int days[] = {1,2,3,4,5};
int *ptr...
Find and copy files
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In linux had to specify the target directory like so: find /home/shantanu/processed/ -name '*2011*.xml' -exec cp --target-directory=/home/shantanu/tosend {} \;
– GuruM
Aug 14 '12 at 10:17...
EC2 Can't resize volume after increasing size
... I can't seem to install cloud-guest-utils which contains growpart. Linux version 3.16.0-4-amd64
– nettie
Jan 28 '19 at 21:30
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Tool for generating railroad diagram used on json.org [closed]
...th.
railroad diagram generator from tabatkins, in js (Syntax exists as a Python library as well)
js-sequence-diagrams from bramp, in js but UML (Syntax is generated via bottlecaps.de)
umlClass from GoJS, in js but found only for UML
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Adding a legend to PyPlot in Matplotlib in the simplest manner possible
...and then call legend(loc='upper left').
Consider this sample (tested with Python 3.8.0):
import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0, 20, 1000)
y1 = np.sin(x)
y2 = np.cos(x)
plt.plot(x, y1, "-b", label="sine")
plt.plot(x, y2, "-r", label="cosine")
plt.legend(loc="upper l...
How to concatenate strings in django templates?
... best answer because working correctly with values which can be coerced by Python as integers.
– zen11625
Sep 25 '15 at 5:41
2
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Manually adding a Userscript to Google Chrome
...nsions\
Chromium: %LocalAppData%\Chromium\User Data\Default\Extensions\
Linux:
Chrome : ~/.config/google-chrome/Default/Extensions/
Chromium: ~/.config/chromium/Default/Extensions/
Mac OS X:
Chrome : ~/Library/Application Support/Google/Chrome/Default/Extensions/
Chromium: ~/Library/Ap...
Display JSON as HTML [closed]
...est answer to what has been a very complex question -- how to pretty-print python json in html. thank you.
– Marc Cenedella
Feb 19 '13 at 10:04
1
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How can I add numbers in a Bash script?
...nal tools you can use:
num=$(awk "BEGIN {print $num1+$num2; exit}")
num=$(python -c "print $num1+$num2")
num=$(perl -e "print $num1+$num2")
num=$(echo $num1 + $num2 | bc) # Whitespace for echo is important
You can also use scientific notation (for example, 2.5e+2).
Common pitfalls:
When se...