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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? ...
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HTTP header line break style

Which line break style is preferable for use in HTTP headers: \r\n or \n , and why? 3 Answers ...
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Create JSON object dynamically via JavaScript (Without concate strings)

I have this JSON data: 4 Answers 4 ...
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How to hide “Showing 1 of N Entries” with the dataTables.js library

How do you remove the "Showing 1 of N entries" line of text on a dataTable (that is when using the javascript library dataTables? I think I was looking for something along these lines... ...
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Using “label for” on radio buttons

When using the "label for" parameter on radio buttons, to be 508 compliant *, is the following correct? 3 Answers ...