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what is the unsigned datatype?

I've seen this unsigned "typeless" type used a couple of times, but never seen an explanation for it. I suppose there's a corresponding signed type. Here's an example: ...
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How to exclude certain directories/files from git grep search

Is there a way to exclude certain paths/directories/files when searching a git repository using git grep ? Something similar to the --exclude option in the normal grep command? ...
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Use PHP to create, edit and delete crontab jobs?

Is it possible to use PHP to create, edit and delete crontab jobs? 12 Answers 12 ...
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Sending a mail from a linux shell script

I want to send an email from a Linux Shell script. What is the standard command to do this and do I need to set up any special server names? ...
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How do I attach events to dynamic HTML elements with jQuery? [duplicate]

Suppose I have some jQuery code that attaches an event handler to all elements with class .myclass . 8 Answers ...
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How to split a delimited string into an array in awk?

How to split the string when it contains pipe symbols | in it. I want to split them to be in array. 9 Answers ...
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What is SuppressWarnings (“unchecked”) in Java?

Sometime when looking through code, I see many methods specify an annotation: 11 Answers ...
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How to get the first column of a pandas DataFrame as a Series?

I tried: 6 Answers 6 ...
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How to load an ImageView by URL in Android? [closed]

How do you use an image referenced by URL in an ImageView ? 23 Answers 23 ...
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Timeout jQuery effects

I am trying to have an element fade in, then in 5000 ms fade back out again. I know I can do something like: 7 Answers ...