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How do you create nested dict in Python?
...he next step creating a dictionary on row_key
d[row_key] = {}
for idx, col in enumerate(row):
d[row_key][idx] = col
According to your comment:
may be above code is confusing the question. My problem in nutshell: I
have 2 files a.csv b.csv, a.csv has 4 columns i j k l, b.cs...
How to format a float in javascript?
...ould have (granted you're multiplying the original by 10^n beforehand, and calling toFixed() with n digits). The "correctness" of the answer is very dependent on what the OP wants here, and both are "correct" in their own way.
– DDPWNAGE
Apr 17 '18 at 5:31
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Should I use != or for not equal in T-SQL?
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Technically they function the same if you’re using SQL Server AKA T-SQL. If you're using it in stored procedures there is no performance reason to use one over the other. It then comes down to personal preference. I prefer to u...
How to force link from iframe to be opened in the parent window
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There's a HTML element called base which allows you to:
Specify a default URL and a default target for all links on a page:
<base target="_blank" />
By specifying _blank you make sure all links inside the iframe will be opened outsid...
SVN: Folder already under version control but not comitting?
...d it and commit. Most of the time this workaround works, it seems that basically SVN got confused...
Update: quoting comment by @Mark:
Didn't need to move the folder around, just deleting the .svn folder and then svn-adding it worked.
...
PHP - Check if two arrays are equal
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@super_ton: yes, before calling array_diff could speed-up the comparison. I will add it. Thanks
– lepe
Sep 8 '16 at 0:35
3
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Difference between @import and link in CSS
...t of both <link> and @import (and all sorts of combinations of them) called "don’t use @import". That title pretty much speaks for itself.
Yahoo! also mentions it as one of their performance best practices (co-authored by Steve Souders): Choose <link> over @import
Also, using the <...
How to empty a Heroku database
...of your app} substitute the name of your app. For example, if your app is called my_great_app then you use:
heroku pg:reset DATABASE_URL --confirm my_great_app
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Shell script - remove first and last quote (") from a variable
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@jsears Huh? This specifically trims one from the start if there is one, and one from the end if there is one. If you don't want to remove unless both are present; yes, a single sed regex could be used, or the variable substitution could be wrapped ...
可重入函数、不可重入函数及线程安全 - C/C++ - 清泛网 - 专注C/C++及内核技术
...txid
ptsname
wctomb
If a function can be safely called by multiple threads at the same time, we say that the function is thread-safe
上面一段话是APUE中的解释，如果一个函数能够安全的同时被多个线程调用而得到正确的结果，那么，我们...