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Can I set variables to undefined or pass undefined as an argument?

I’m a bit confused about JavaScript’s undefined and null values. 10 Answers 10...
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What exactly does stringstream do?

I am trying to learn C++ since yesterday and I am using this document: http://www.cplusplus.com/files/tutorial.pdf (page 32) . I found a code in the document and I ran it. I tried inputting Rs 5.5 for price and an integer for quantity and the output was 0. I tried inputting 5.5 and 6 and the output...
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Java 8 stream's .min() and .max(): why does this compile?

...not used for matching purposes. Therefore, both Integer.min(int a, int b) and Integer.max(int a, int b) are close enough that autoboxing will allow this to appear as a Comparator<Integer> in a method context. share ...
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Checking for NULL pointer in C/C++ [closed]

...ol NULL. They do not expose the opportunity for the accidental assignment. And they are clear and succinct. Edit: As SoapBox points out in a comment, they are compatible with C++ classes such as auto_ptr that are objects that act as pointers and which provide a conversion to bool to enable exactly...
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Create tap-able “links” in the NSAttributedString of a UILabel?

...ging the appearance of a portion of the text to look like a link Detecting and handling touches on the link (opening an URL is a particular case) The first one is easy. Starting from iOS 6 UILabel supports display of attributed strings. All you need to do is to create and configure an instance of ...
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Find CRLF in Notepad++

...... But if you have Notepad++ 5.x, you can use the 'extended' search mode and look for \r\n. That does find all your CRLF. (I realize this is the same answer than the others, but again, 'extended mode' is only available with Notepad++ 4.9, 5.x and more) Since April 2009, you have a wiki article...
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find: missing argument to -exec

I was helped out today with a command, but it doesn't seem to be working. This is the command: 10 Answers ...
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Should I hash the password before sending it to the server side?

... is a silver bullet, which it is not. It certainly helps greatly however, and should be used in any authenticated session. There is really no need to know what an original password is. All that is required is a reliable way to generate (and reliably re-generate) an authentication "key" based on t...
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What are good grep tools for Windows? [closed]

... Based on recommendations in the comments, I've started using grepWin and it's fantastic and free. (I'm still a fan of PowerGREP, but I don't use it anymore.) I know you already mentioned it, but PowerGREP is awesome. Some of my favorite features are: Right-click on a folder to run PowerGREP ...
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When to use which design pattern? [closed]

...ve read a lot of websites where design patterns are explained. I do understand the most of them, but I find it difficult to recognize a pattern in my own situations. ...