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Global variables in Java
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To define Global Variable you can make use of static Keyword
public class Example {
public static int a;
public static int b;
}
now you can access a and b from anywhere
by calling
Example.a;
Example.b;
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Why do Python's math.ceil() and math.floor() operations return floats instead of integers?
...turning a floating point value, the functions can return a sensible value for input values that lie outside the representable range of integers.
Consider: If floor() returned an integer, what should floor(1.0e30) return?
Now, while Python's integers are now arbitrary precision, it wasn't always th...
Why covariance and contravariance do not support value type
IEnumerable<T> is co-variant but it does not support value type, just only reference type. The below simple code is compiled successfully:
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How do you make lettered lists using markdown?
Markdown allows ordered lists using numbers. How can I instead get an ordered list using letters ? i.e.
5 Answers
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How do I add multiple arguments to my custom template filter in a django template?
...l your arguments into a single string using a comma to separate them.
So for example, if you want a filter that checks if variable X is in the list [1,2,3,4] you will want a template filter that looks like this:
{% if X|is_in:"1,2,3,4" %}
Now we can create your templatetag like this:
from djang...
How can I programmatically check whether a keyboard is present in iOS app?
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…or take the easy way:
When you enter a textField, it becomes first responder and the keyboard appears.
You can check the status of the keyboard with [myTextField isFirstResponder]. If it returns YES, then the the keyboard i...
How to rename a file using Python
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Use os.rename:
import os
os.rename('a.txt', 'b.kml')
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What is ECMAScript?
...ript is a subset of ECMAScript. JavaScript is basically ECMAScript at its core but builds upon it. Languages such as ActionScript, JavaScript, JScript all use ECMAScript as its core. As a comparison, AS/JS/JScript are 3 different cars, but they all use the same engine... each of their exteriors is d...
Do Google refresh tokens expire?
I have used the refresh token several times in just a short period for testing purposes, but I wonder whether Google refresh tokens ever expire? Can I use the same refresh token to get another access token again and again for a long period (a week or even months)?
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What does a tilde do when it precedes an expression?
I saw it in an answer, and I've never seen it before.
5 Answers
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