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What are all the differences between src and data-src attributes?

What are differences and consequences (both good and bad) of using either data-src or src attribute of img tag? Can I achieve the same results using both? If so, when should be used each of them? ...
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Remove file from SVN repository without deleting local copy

How can I "delete" a file which is already in the SVN repository without deleting it from my file system? 5 Answers ...
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Convert varchar to uniqueidentifier in SQL Server

A table I have no control of the schema for, contains a column defined as varchar(50) which stores uniqueidentifiers in the format 'a89b1acd95016ae6b9c8aabb07da2010' (no hyphens) ...
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Why does “,,,” == Array(4) in Javascript?

Boot up your interpreter/console and try the comparison 6 Answers 6 ...
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How to check if an intent can be handled from some activity?

I have this method so far , but it came up like something is missing 6 Answers 6 ...
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How to check if field is null or empty in MySQL?

I am trying to figure out how to check if a field is NULL or empty . I have this: 7 Answers ...
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Control the size of points in an R scatterplot?

In R, the plot() function takes a pch argument that controls the appearance of the points in the plot. I'm making scatterplots with tens of thousands of points and prefer a small, but not too small dot. Basically, I find pch='.' to be too small, but pch=19 to be too fat. Is there somethin...
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How to conditionally push an item in an observable array?

I would like to push a new item onto an observableArray , but only if the item is not already present. Is there any "find" function or recommended pattern for achieving this in KnockoutJS? ...
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How to open files relative to home directory

The following fails with Errno::ENOENT: No such file or directory , even if the file exists: 4 Answers ...
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Git diff -w ignore whitespace only at start & end of lines

I love to use git diff -w to ignore whitespace differences. But, I just noticed that it ignores even whitespace differences in the middle of lines. How could I only ignore whitespace differences that come at the start (^) or end ($) of lines? ...