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Difference between Role and GrantedAuthority in Spring Security
...hat says that a role is a GrantedAuthority that starts with the prefix ROLE_. There's nothing more. A role is just a GrantedAuthority - a "permission" - a "right". You see a lot of places in spring security where the role with its ROLE_ prefix is handled specially as e.g. in the RoleVoter, where the...
Abort makefile if variable not set
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TL;DR: Use the error function:
ifndef MY_FLAG
$(error MY_FLAG is not set)
endif
Note that the lines must not be indented. More precisely, no tabs must precede these lines.
Generic solution
In case you're going to test many variables, it's worth defining an au...
C++ templates Turing-complete?
...it on a pastebin page and repasted it here: coliru.stacked-crooked.com/a/de06f2f63f905b7e .
– Johannes Schaub - litb
Jul 18 '15 at 11:07
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Text overwrite in visual studio 2010
...e. Thanks!
– mhand
Feb 19 '16 at 16:06
I've got an iMac running windows on Virtual Box, my keyboard has numeric pad......
Submitting a multidimensional array via POST with php
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On submitting, you would get an array as if created like this:
$_POST['topdiameter'] = array( 'first value', 'second value' );
$_POST['bottomdiameter'] = array( 'first value', 'second value' );
However, I would suggest changing your form names to this format instead:
name="diameters[0]...
Automatically import modules when entering the python or ipython interpreter
...roduction scripts.
For Ipython, see this tutorial on how to make a ipython_config file
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How do I setup a SSL certificate for an express.js server?
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Other options for createServer are at: http://nodejs.org/api/tls.html#tls_tls_createserver_options_secureconnectionlistener
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How to find list intersection?
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Make a set out of the larger one:
_auxset = set(a)
Then,
c = [x for x in b if x in _auxset]
will do what you want (preserving b's ordering, not a's -- can't necessarily preserve both) and do it fast. (Using if x in a as the condition in the list compreh...
Getting a list item by index
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answered Mar 17 '13 at 2:06
Mitch WheatMitch Wheat
274k3939 gold badges435435 silver badges516516 bronze badges
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Best way to check if a URL is valid
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You can use a native Filter Validator
filter_var($url, FILTER_VALIDATE_URL);
Validates value as URL (according to » http://www.faqs.org/rfcs/rfc2396), optionally with required components. Beware a valid URL may not specify the HTTP protocol http:// so further val...