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How can I quickly sum all numbers in a file?
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For a Perl one-liner, it's basically the same thing as the awk solution in Ayman Hourieh's answer:
% perl -nle '$sum += $_ } END { print $sum'
If you're curious what Perl one-liners do, you can deparse them:
% perl -MO=Deparse -nle '$sum += $_ } END ...
Can Visual Studio 2012 be installed side-by-side w/ Visual Studio 2010?
...Visual Studio 2012 interfere/break .NET 4 and/or Visual Studio 2010 if installed side-by-side on the same instance of Windows?
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Why is __init__() always called after __new__()?
... new instance.
__new__ is the first step of instance creation. It's called first, and is
responsible for returning a new
instance of your class.
In contrast,
__init__ doesn't return anything; it's only responsible for initializing the
instance after it's been created.
In ge...
Client on node: Uncaught ReferenceError: require is not defined
... true when the browser window (where this HTML file is embedded) was originally created in the main process.
function createAddItemWindow() {
//Create new window
addItemWindown = new BrowserWindow({
width: 300,
height: 200,
title: 'Add Item',
//The lines below solved the issue
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What is the python keyword “with” used for? [duplicate]
...n-us/library/htd05whh.aspx and msdn.microsoft.com/en-us/library/wc500chb(v=vs.110).aspx
– Scott Wisniewski
Dec 1 '13 at 20:08
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How to check that an element is in a std::set?
... Note that using count() instead of find() is never better but potentially worse. This is because find() will return after the first match, count() will always iterate over all elements.
– Frerich Raabe
Nov 9 '09 at 15:50
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Unable to launch the IIS Express Web server
...same problem.
The reason - bad IIS config file.
Try deleting the automatically-created IISExpress folder, which is usually located at %userprofile%/Documents, e.g. C:\Users\[you]\Documents\IISExpress.
Don't worry, VS should create it again - correctly, this time - once you run your solution again....
Single vs Double quotes (' vs ")
.... I work with a lot of rendered HTML which always uses double quotes. This allows me to determine if the HTML was written by hand or generated. Is this a good idea?
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How to exit in Node.js
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Call the global process object's exit method:
process.exit()
From the docs:
process.exit([exitcode])
Ends the process with the specified code. If omitted, exit uses the 'success' code 0.
To exit with a 'failure' code:
proces...
Refresh a page using JavaScript or HTML [duplicate]
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no, i did not test them all
– epoch
Jan 10 '14 at 8:06
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