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Python None comparison: should I use “is” or ==?
... when you want to check against an object's identity (e.g. checking to see if var is None). Use == when you want to check equality (e.g. Is var equal to 3?).
Explanation:
You can have custom classes where my_var == None will return True
e.g:
class Negator(object):
def __eq__(self,other):
...
Remove all special characters with RegExp
...
Note that if you still want to exclude a set, including things like slashes and special characters you can do the following:
var outString = sourceString.replace(/[`~!@#$%^&*()_|+\-=?;:'",.<>\{\}\[\]\\\/]/gi, '');
take spe...
Extract a part of the filepath (a directory) in Python
...ode:
dirname1 = os.path.basename(dir)
dirname2 = os.path.split(dir)[1] ## if you look at the documentation, this is exactly what os.path.basename does.
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How to terminate script execution when debugging in Google Chrome?
...Script code in Google Chrome debugger, how do I terminate script execution if I do not want to continue? The only way I found is closing the browser window.
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Using Java 8 to convert a list of objects into a string obtained from the toString() method
...te with a stream over a list of objects and then sum the values from a specific field of the Object 's instances. E.g.
13 ...
Global variables in Javascript across multiple files
... the HTML that calls this JavaScript code I find myself in need of knowing if a certain function from helpers.js has been called.
...
Difference between break and continue in PHP?
What is the difference between break and continue in PHP?
10 Answers
10
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How do I close all open tabs at once?
If I have 10 tabs opened, I have to close each one using ":q" separately.
8 Answers
8...
Int or Number DataType for DataAnnotation validation attribute
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For any number validation you have to use different different range validation as per your requirements :
For Integer
[Range(0, int.MaxValue, ErrorMessage = "Please enter valid integer Number")]
for float
[Range(0, float.MaxValue, ErrorMessage = "Please enter va...
How to access route, post, get etc. parameters in Zend Framework 2
...in, introduced in beta5. It has utility methods to make it easy to access different types of parameters. As always, reading the tests can prove valuable to understand how something is supposed to be used.
Get a single value
To get the value of a named parameter in a controller, you will need to sele...