大约有 9,000 项符合查询结果（耗时：0.0332秒） [XML]
How to access random item in list?
...ough the original list in an ordered way.
– Johan Tidén
Aug 7 '13 at 12:24
5
...
Exception handling in R [closed]
...e it, but knows how to construct an
error and
diligently conveys his naiveté:
low_level_ABS <- function(x){
if(x<0){
#construct an error
negative_value_error <- structure(
# with class `negative_value`
class = c("negative_value",...
how to convert an RGB image to numpy array?
...
You can use newer OpenCV python interface (if I'm not mistaken it is available since OpenCV 2.2). It natively uses numpy arrays:
import cv2
im = cv2.imread("abc.tiff",mode='RGB')
print type(im)
result:
<type 'numpy.ndarray'>
...
How to set Meld as git mergetool
...
You could use complete unix paths like:
PATH=$PATH:/c/python26
git config --global merge.tool meld
git config --global mergetool.meld.path /c/Program files (x86)/meld/bin/meld
This is what is described in "How to get meld working with git on Windows"
Or you can adopt the wrap...
Why / when would it be appropriate to override ToString?
...Fortunately, such strategies are very common:
ISerializable (C#)
Pickle (Python)
JSON (Javascript or any language that implements it)
SOAP
etc...
Note: Unless you're using PHP because, herp-derp, there's a function for that ::snicker::
Reason 2 - ToString() is not enough:
I have yet to see a l...
Can I set subject/content of email using mailto:?
...e: you don't have to htmlescape the subject
– Oscar Pérez
Dec 9 '13 at 14:17
18
Note that W3C re...
Taskkill /f doesn't kill a process
...ked like a charm for my stuck npm
– Eduardo Elias Saléh
Apr 10 '18 at 8:19
1
Amazing, thanks so ...
Is there an interpreter for C? [closed]
...ng like an interpreter for C. That is, in a Linux terminal I can type in "python" and then code in that interpreter. (I'm not sure interpreter the right word). This is really helpful for testing different things out and I'm curious if something similar exists for C. Though I doubt it. The only ...
iPhone viewWillAppear not firing
...u called it manually, it would be called twice.
– Vilém Kurz
Nov 10 '11 at 17:24
...
Automatically remove Subversion unversioned files
...on to do this:
svn cleanup --remove-unversioned
Before that, I use this python script to do that:
import os
import re
def removeall(path):
if not os.path.isdir(path):
os.remove(path)
return
files=os.listdir(path)
for x in files:
fullpath=os.path.join(path, x)...