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Secure random token in Node.js
In this question Erik needs to generate a secure random token in Node.js. There's the method crypto.randomBytes that generates a random Buffer. However, the base64 encoding in node is not url-safe, it includes / and + instead of - and _ . Therefore, the easiest way to generate such token ...
Determine if an element has a CSS class with jQuery
I'm working with jQuery and looking to see if there is an easy way to determine if the element has a specific CSS class associated with it.
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Store output of subprocess.Popen call in a string
I'm trying to make a system call in Python and store the output to a string that I can manipulate in the Python program.
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Can I use complex HTML with Twitter Bootstrap's Tooltip?
...whether you are going to use complex html into the tooltip. Set it to true and then hit the html into the title attribute of the tag.
See this fiddle here - I've set the html attribute to true through the data-html="true" in the <a> tag and then just added in the html ad hoc as an example.
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Why does direction of index matter in MongoDB?
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MongoDB concatenates the compound key in some way and uses it as the key in a BTree.
When finding single items - The order of the nodes in the tree is irrelevant.
If you are returning a range of nodes - The elements close to each other will be down the same branches of th...
How to grey out a button?
...able state with false indication; see comments)
You will provide effect and background for the states accordingly.
Here is a detailed discussion: Standard Android Button with a different color
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Checking for empty arrays: count vs empty
...y, was empty — i.e., as though it had no elements). This is problematic, and another example of PHP being too forgiving.
– Matthew Slyman
Apr 5 '17 at 4:59
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What is the Java string pool and how is “s” different from new String(“s”)? [duplicate]
What is meant by String Pool ? And what is the difference between the following declarations:
5 Answers
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How can I send mail from an iPhone application
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On iOS 3.0 and later you should use the MFMailComposeViewController class, and the MFMailComposeViewControllerDelegate protocol, that is tucked away in the MessageUI framework.
First add the framework and import:
#import <MessageUI...
Run Command Prompt Commands
Is there any way to run command prompt commands from within a C# application? If so how would I do the following:
14 Answe...