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What's the canonical way to check for type in Python?
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To check if o is an instance of str or any subclass of str, use isinstance (this would be the "canonical" way):
if isinstance(o, str):
To check if the type of o is exactly str (exclude subclasses):
if type(o) is str:
The followi...
The performance impact of using instanceof in Java
...now that OO design generally tries to avoid using instanceof , that is a different story and this question is purely related to performance. I was wondering if there is any performance impact? Is is just as fast as == ?
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How to dismiss a Twitter Bootstrap popover by clicking outside?
...click', function (e) {
//did not click a popover toggle or popover
if ($(e.target).data('toggle') !== 'popover'
&& $(e.target).parents('.popover.in').length === 0) {
$('[data-toggle="popover"]').popover('hide');
}
});
For buttons containing icons use (this code...
Backbone.js: get current route
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If you have instantiated a Router in your application, the following line returns the current fragment:
Backbone.history.getFragment();
From the Backbone.js documentation:
"
[...]
History serves as a global router (per fr...
Access-Control-Allow-Origin error sending a jQuery Post to Google API's
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I solved the Access-Control-Allow-Origin error modifying the dataType parameter to dataType:'jsonp' and adding a crossDomain:true
$.ajax({
url: 'https://www.googleapis.com/moderator/v1/series?key='+key,
data: myData,
type: 'GET',
crossDomain: true,
data...
How to get city name from latitude and longitude coordinates in Google Maps?
How might I obtain the city name in Google Maps if I have latitude and longitude coordinates of a town or area?
15 Answers
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How to open, read, and write from serial port in C?
...o-out a struct termios, configure it, and then set the tty with tcsetattr. If you use the zero-out method, then you will experience unexplained intermittent failures, especially on the BSDs and OS X. "Unexplained intermittent failures" include hanging in read(3).
#include <errno.h>
#include &...
What is the difference between a field and a property?
In C#, what makes a field different from a property, and when should a field be used instead of a property?
32 Answers
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The necessity of hiding the salt for a hash
...ser name or phone number to salt the hash. Essentially something that is different for each user but is readily available to us. The other product randomly generates a salt for each user and changes each time the user changes the password. The salt is then encrypted in the database.
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How to check if a float value is a whole number
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To check if a float value is a whole number, use the float.is_integer() method:
>>> (1.0).is_integer()
True
>>> (1.555).is_integer()
False
The method was added to the float type in Python 2.6.
Take into account t...