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Decimal number regular expression, where digit after decimal is optional
I need a regular expression that validates a number, but doesn't require a digit after the decimal.
ie.
15 Answers
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How do you stash an untracked file?
I have changes to a file, plus a new file, and would like to use git stash to put them away while I switch to another task. But git stash by itself stashes only the changes to the existing file; the new file remains in my working tree, cluttering up my future work. How do I stash this untracked fi...
Finding out the name of the original repository you cloned from in Git
When you do your first clone using the syntax
8 Answers
8
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Convert blob to base64
This is a snippet for the code that I want to do Blob to Base64 string:
9 Answers
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What does “xmlns” in XML mean?
I saw the following line in an XML file:
5 Answers
5
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Big-O for Eight Year Olds? [duplicate]
I'm asking more about what this means to my code. I understand the concepts mathematically, I just have a hard time wrapping my head around what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to p...
Difference between null and empty (“”) Java String
What is the difference between null and the "" (empty string)?
22 Answers
22
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How can I center a div within another div? [duplicate]
I suppose that the #container will be centered within #main_content . However, it is not. Why isn't this working, and how can I fix it?
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Include all existing fields and add new fields to document
I would like to define a $project aggregation stage where I can instruct it to add a new field and include all existing fields, without having to list all the existing fields.
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Javascript trick for 'paste as plain text` in execCommand
I have a basic editor based on execCommand following the sample introduced here. There are three ways to paste text within the execCommand area:
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