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Why does GCC generate 15-20% faster code if I optimize for size instead of speed?
I first noticed in 2009 that GCC (at least on my projects and on my machines) have the tendency to generate noticeably faster code if I optimize for size ( -Os ) instead of speed ( -O2 or -O3 ), and I have been wondering ever since why.
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Python - Get path of root project structure
...directory as well ? Should that be correct ? I've just started with python and not sure on the best practices. Thanks.
– akskap
Aug 30 '16 at 8:20
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Your project contains error(s), please fix it before running it
...g steps project>>properties>>Java Build Path in left panel and select libraries in right panel(3 column) jar file is error. Just add JAR file in the same project libs folder in the popup. delete errored lib file. It works for me.
– gnganapath
Mar 10...
Inspect element that only appear when other element is mouse overed/entered
...to the Elements panel and use the magnifying glass icon in the top left to select the tooltip
If the tooltip shows up because of CSS, here's what you can do in that case:
Step-by-step:
Open the DevTools
Select the triggering element in the dev tools (the link)
Right click, and select "force el...
Python Script execute commands in Terminal
... somewhere a while ago but cant seem to find it. I am trying to find a command that will execute commands in the terminal and then output the result.
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Reading a file line by line in Go
...('\n') isn't fully equivalent to ReadLine because ReadString is unable to handle the case when the last line of a file does not end with the newline character.
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Make sure only a single instance of a program is running
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The following code should do the job, it is cross-platform and runs on Python 2.4-3.2. I tested it on Windows, OS X and Linux.
from tendo import singleton
me = singleton.SingleInstance() # will sys.exit(-1) if other instance is running
The latest code version is available singleto...
Installing PG gem on OS X - failure to build native extension
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Same error for me and I didn't experience it until I downloaded OS X 10.9 (Mavericks). Sigh, another OS upgrade headache.
Here's how I fixed it (with homebrew):
Install another build of Xcode Tools (typing brew update in the terminal will p...
Git - How to use .netrc file on Windows to save user and password
...in the control panel. Depending on the version of Windows, you may need to select "Advanced Options".).
The password stored in the _netrc file cannot contain spaces (quoting the password will not work).
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Do on-demand Mac OS X cloud services exist, comparable to Amazon's EC2 on-demand instances? [closed]
Amazon's EC2 service offers a variety of Linux and Windows OS choices, but I haven't found a service offering a similar "rent by the hour" service for a remote Mac OS X virtual machine. Does such a service exist? (iCloud looks to be just a data storage service, rather than a service allowing remot...