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sed command with -i option (in-place editing) works fine on Ubuntu but not Mac [duplicate]
I know nothing about Sed but need this command (which works fine on Ubuntu) to work on a Mac OSX:
4 Answers
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URL rewriting with PHP
...s route with mod_rewrite
Add a file called .htaccess in your root folder, and add something like this:
RewriteEngine on
RewriteRule ^/?Some-text-goes-here/([0-9]+)$ /picture.php?id=$1
This will tell Apache to enable mod_rewrite for this folder, and if it gets asked a URL matching the regular exp...
Fastest way to replace NAs in a large data.table
... data.table , with many missing values scattered throughout its ~200k rows and 200 columns. I would like to re code those NA values to zeros as efficiently as possible.
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Regular Expressions and negating a whole character group [duplicate]
...ples I gave won't match 'ab' it's true but they also won't match 'a' alone and I need them to. Is there some simple way to do this?
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Detect the Internet connection is offline?
...etermine that the connection is lost by making failed XHR requests.
The standard approach is to retry the request a few times. If it doesn't go through, alert the user to check the connection, and fail gracefully.
Sidenote: To put the entire application in an "offline" state may lead to a lot of ...
What happens when a duplicate key is put into a HashMap?
...e times to HashMap ’s put method, what happens to the original value? And what if even the value repeats? I didn’t find any documentation on this.
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What approaches are available to dummy design-time data in WPF?
I am working without expression blend and just using the XAML editor in vs2010. The wisdom of this aside, I am increasingly seeing a need for design-time data binding. For simple cases, the FallbackValue property works very nicely (Textboxes and TextBlocks, etc). But especially when dealing with ...
Accessing Session Using ASP.NET Web API
I realize session and REST don't exactly go hand in hand but is it not possible to access session state using the new Web API? HttpContext.Current.Session is always null.
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Can You Get A Users Local LAN IP Address Via JavaScript?
I know the initial reaction to this question is "no" and "it can't be done" and "you shouldn't need it, you are doing something wrong". What I'm trying to do is get the users LAN IP address, and display it on the web page. Why? Because that's what the page I'm working on is all about, showing as muc...
What is the meaning of prepended double colon “::”?
...wered Nov 24 '10 at 16:27
Wyatt AndersonWyatt Anderson
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