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How to use PyCharm to debug Scrapy projects
I am working on Scrapy 0.20 with Python 2.7. I found PyCharm has a good Python debugger. I want to test my Scrapy spiders using it. Anyone knows how to do that please?
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How do you reverse a string in place in JavaScript?
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How to save a list as numpy array in python?
...directly create an array from a list as:
import numpy as np
a = np.array( [2,3,4] )
Or from a from a nested list in the same way:
import numpy as np
a = np.array( [[2,3,4], [3,4,5]] )
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impr...
Implementing comparison operators via 'tuple' and 'tie', a good idea?
... variable names. Even if I myself created that typedef , I won't remember 2 days later what first and what second exactly was, especially if they are both of the same type. This gets even worse for more than two members, as nesting pair s pretty much sucks.
The other option for that is a tu...
How can I make a multipart/form-data POST request using Java?
..., making a multipart/form-data POST request was possible ( an example from 2004 ). Unfortunately this is no longer possible in version 4.0 of HttpClient .
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Center image in div horizontally [duplicate]
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edited Jul 1 '18 at 12:52
Clemens Tolboom
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answered Apr 16...
What's the purpose of the LEA instruction?
... already in EBX, and variable i is in EAX, and xcoord and ycoord are each 32 bits (so ycoord is at offset 4 bytes in the struct), this statement can be compiled to:
MOV EDX, [EBX + 8*EAX + 4] ; right side is "effective address"
which will land y in EDX. The scale factor of 8 is because each Po...
How to generate random number in Bash?
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edited Jan 29 at 13:26
Dr. Person Person II
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IntelliJ: Working on multiple projects
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answered Jan 7 '12 at 23:38
ŁukaszBachmanŁukaszBachman
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Count, size, length…too many choices in Ruby?
...ke an element or predicate and count only those items that match.
> [1,2,3].count{|x| x > 2 }
=> 1
In the case where you don't provide a parameter to count it has basically the same effect as calling length. There can be a performance difference though.
We can see from the source code...