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Wrap long lines in Python [duplicate]
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Actually, the "\" is redundant and can be omitted.
– Daniel Reis
Jan 7 '13 at 17:19
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What is the Difference Between read() and recv() , and Between send() and write()?
What is the difference between read() and recv() , and between send() and write() in socket programming in terms of performances, speed and other behaviors?
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Changing variable names in Vim
I am using Vim to read through a lot of C and Perl code containing many single letter variable names.
7 Answers
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How to set up tmux so that it starts up with specified windows opened?
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@AhmadYoosofan, The vim there stands for the command that is to be executed in the first (and at that time only) pane of the window. If you instead want to name the session 'vim' then yes, you're right, you got to use the -s flag. Whole syntax: tmux new-se...
What do parentheses surrounding an object/function/class declaration mean? [duplicate]
I'm new to both JavaScript and YUI . In YUI library examples, you can find many uses of this construct:
7 Answers
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What is the difference between packaged_task and async
...nces if you use a rather long function, such as
//! sleeps for one second and returns 1
auto sleep = [](){
std::this_thread::sleep_for(std::chrono::seconds(1));
return 1;
};
Packaged task
A packaged_task won't start on it's own, you have to invoke it:
std::packaged_task<int()> tas...
Boolean vs boolean in Java
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Yes you can use Boolean/boolean instead.
First one is Object and second one is primitive type.
On first one, you will get more methods which will be useful.
Second one is cheap considering memory expense The second will save you a lot more memory, so go for it
Now choose your way....
Retrieving the last record in each group - MySQL
...dowing functions, like almost all popular SQL implementations. With this standard syntax, we can write greatest-n-per-group queries:
WITH ranked_messages AS (
SELECT m.*, ROW_NUMBER() OVER (PARTITION BY name ORDER BY id DESC) AS rn
FROM messages AS m
)
SELECT * FROM ranked_messages WHERE rn = 1...
Is “double hashing” a password less secure than just hashing it once?
...s the time it takes for an attacker to try each password in their list of candidates. You can easily increase the time it takes to attack a password from hours to years.
Simple iteration is not enough
Merely chaining hash output to input isn't sufficient for security. The iteration should take pla...
High performance fuzzy string comparison in Python, use Levenshtein or difflib [closed]
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In case you're interested in a quick visual comparison of Levenshtein and Difflib similarity, I calculated both for ~2.3 million book titles:
import codecs, difflib, Levenshtein, distance
with codecs.open("titles.tsv","r","utf-8") as f:
title_list = f.read().split("\n")[:-1]
for row ...