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How to check if variable is string with python 2 and 3 compatibility
I'm aware that I can use: isinstance(x, str) in python-3.x but I need to check if something is a string in python-2.x as well. Will isinstance(x, str) work as expected in python-2.x? Or will I need to check the version and use isinstance(x, basestr) ?
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What is the difference between Python and IPython?
What exactly is the difference between Python and IPython ?
7 Answers
7
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List comprehension vs map
Is there a reason to prefer using map() over list comprehension or vice versa? Is either of them generally more efficient or considered generally more pythonic than the other?
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How does this code generate the map of India?
This code prints the map of India. How does it work?
2 Answers
2
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Handling optional parameters in javascript
...nts were passed to your function and you can check if your second argument is a function or not:
function getData (id, parameters, callback) {
if (arguments.length == 2) { // if only two arguments were supplied
if (Object.prototype.toString.call(parameters) == "[object Function]") {
cal...
Pass Variables by Reference in Javascript
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There is no "pass by reference" available in JavaScript. You can pass an object (which is to say, you can pass-by-value a reference to an object) and then have a function modify the object contents:
function alterObject(obj) {
o...
Defining private module functions in python
...t still depends on social convention and consensus: Python's introspection is forceful enough that you can't handcuff every other programmer in the world to respect your wishes.
((Btw, though it's a closely held secret, much the same holds for C++: with most compilers, a simple #define private publ...
What is the difference between active and passive FTP?
Can someone tell me what is the difference between active and passive FTP?
Which one is preferable?
5 Answers
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Benefit of using Parcelable instead of serializing object
... and Parcelable belongs to the way Android performs serialization in. It is used for example in passing data between activities. But I wonder, if there are any benefits in using Parcelable instead of classic serialization in case of saving state of my business objects to the internal memory for ...
Safe integer parsing in Ruby
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Ruby has this functionality built in:
Integer('1001') # => 1001
Integer('1001 nights')
# ArgumentError: invalid value for Integer: "1001 nights"
As noted in answer by Joseph Pecoraro, you m...