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How to check if an email address exists without sending an email?
...mand, but it is intended for exactly this. If the server responds with a 2.0.0 DSN, the user exists.
VRFY user
You can issue a RCPT, and see if the mail is rejected.
MAIL FROM:<>
RCPT TO:<user@domain>
If the user doesn't exist, you'll get a 5.1.1 DSN. However, just because the ema...
How to check that an element is in a std::set?
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10 Answers
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Separation of business logic and data access in django
I am writing a project in Django and I see that 80% of the code is in the file models.py . This code is confusing and, after a certain time, I cease to understand what is really happening.
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git push says “everything up-to-date” even though I have local changes
...eate a temporary branch using the -b option, but starting from version 1.5.0, the above command detaches your HEAD from the current branch and directly points at the commit named by the tag (v2.6.18 in the example above).
You can use all git commands while in this state.
You can use git reset...
How to escape special characters in building a JSON string?
...e this list of special character used in JSON :
\b Backspace (ascii code 08)
\f Form feed (ascii code 0C)
\n New line
\r Carriage return
\t Tab
\" Double quote
\\ Backslash character
However, even if it is totally contrary to the spec, the author could use \'.
This is bad because :
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Check if two linked lists merge. If so, where?
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edited Oct 20 '09 at 14:41
answered Oct 20 '09 at 12:47
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Setting a system environment variable from a Windows batch file?
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answered Sep 27 '10 at 14:49
Hugh AllenHugh Allen
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Call a Server-side Method on a Resource in a RESTful Way
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+250
Why aim for a RESTful design?
The RESTful principles bring the features that make web sites easy (for a random human user to "surf" t...
How to avoid installing “Unlimited Strength” JCE policy files when deploying an application?
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edited Jul 8 '17 at 10:21
answered Mar 18 '14 at 22:42
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Why is quicksort better than mergesort?
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answered Sep 16 '08 at 9:14
Konrad RudolphKonrad Rudolph
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