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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
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The most likely cause of the speed improvement is that:
inserting a MOV shifts the subsequent instructions to different memory addresses
one of those moved instructions was an important conditional branch
that branch was being ...
Java Persistence / JPA: @Column vs @Basic
What is the difference between @Column and @Basic annotations in JPA? Can they be used together? Should they be used together? Or does one of them suffice?
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How to un-escape a backslash-escaped string?
... Is there an easy way, in Python, to unescape the string? I could, for example, do:
4 Answers
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_=> what does this underscore mean in Lambda expressions?
What does an lambda expression like _=> expr mean?
5 Answers
5
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Git - working on wrong branch - how to copy changes to existing topic branch
I've been working on a project, but unfortunately, I forgot to switch to my branch, and as such have been working on master
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Restore file from old commit in git
I have an old commit that I did a few weeks ago. I want to restore only a single file from that commit. What do I do?
4 Ans...
How to check for the type of a template parameter?
Suppose I have a template function and two classes
4 Answers
4
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Golang: How to pad a number with zeros when printing?
How can I print a number or make a string with zero padding to make it fixed width?
6 Answers
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How do I delete a fixed number of rows with sorting in PostgreSQL?
I'm trying to port some old MySQL queries to PostgreSQL, but I'm having trouble with this one:
6 Answers
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How to read and write INI file with Python3?
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This can be something to start with:
import configparser
config = configparser.ConfigParser()
config.read('FILE.INI')
print(config['DEFAULT']['path']) # -> "/path/name/"
config['DEFAULT']['path'] = '/var/shared/' # update
confi...