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Concatenating two one-dimensional NumPy arrays
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An alternative ist to use the short form of "concatenate" which is either "r_[...]" or "c_[...]" as shown in the example code beneath (see http://wiki.scipy.org/NumPy_for_Matlab_Users for additional information):
%pylab
vector_a = r_[0.:10.] #short form of "ar...
CURL to access a page that requires a login from a different page
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The web site likely uses cookies to store your session information. When you run
curl --user user:pass https://xyz.com/a #works ok
curl https://xyz.com/b #doesn't work
curl is run twice, in two separate sessions. Thus when the second command runs, the cookies set by the 1st com...
jQuery - getting custom attribute from selected option
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Simpler syntax if one form.
var option = $('option:selected').attr('mytag')
... if more than one form.
var option = $('select#myform option:selected').attr('mytag')
sha...
Automatic post-registration user authentication
... $user = //Handle getting or creating the user entity likely with a posted form
$token = new UsernamePasswordToken($user, null, 'main', $user->getRoles());
$this->container->get('security.token_storage')->setToken($token);
$this->container->get('session')-&g...
How to link to apps on the app store
...dleIdentifier"];
NSURL* url = [NSURL URLWithString:[NSString stringWithFormat:@"http://itunes.apple.com/lookup?bundleId=%@", appID]];
NSData* data = [NSData dataWithContentsOfURL:url];
NSDictionary* lookup = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
NSString ...
Unit tests vs Functional tests
...ernal systems will behave appropriately, that the building inspector is performing his task. The homeowner is focused on what it will be like to live in this house. He is concerned with how the house looks, are the various rooms a comfortable size, does the house fit the family's needs, are the wind...
raw_input function in Python
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raw_input is a form of input that takes the argument in the form of a string whereas the input function takes the value depending upon your input.
Say, a=input(5) returns a as an integer with value 5 whereas
a=raw_input(5) returns a a...
How to un-escape a backslash-escaped string?
...he unicode-escape codec answer is for when it's not a repr, but some other form of escaped text (not surrounded by quotes as part of the string data itself).
– ShadowRanger
Aug 18 '18 at 2:55
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Why the switch statement cannot be applied on strings?
...atement execution on top of a switch. Both have minimal impact, but the performance advantages with a switch are erased by the if-else lookup. Just using an if-else should be marginally faster, but more importantly, significantly shorter.
– Zoe
May 27 at 19:36
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What is the result of % in Python?
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Somewhat off topic, the % is also used in string formatting operations like %= to substitute values into a string:
>>> x = 'abc_%(key)s_'
>>> x %= {'key':'value'}
>>> x
'abc_value_'
Again, off topic, but it seems to be a little documented feat...