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How to determine if a decimal/double is an integer?
...ecimal point.
public static void Main (string[] args)
{
decimal d = 3.1M;
Console.WriteLine((d % 1) == 0);
d = 3.0M;
Console.WriteLine((d % 1) == 0);
}
Output:
False
True
Update: As @Adrian Lopez mentioned below, comparison with a small value epsilon will discard floating-poi...
Get the length of a String
...e the count function as a replacement: count("Swift")
Swift 2.0, 3.0 and 3.1:
let strLength = string.characters.count
Swift 4.2 (4.0 onwards): [Apple Documentation - Strings]
let strLength = string.count
sha...
What is “runtime”?
...ples.
Consider running a program compiled in Turbo-Borland C/C++ (version 3.1 from the year 1991) compiler and let it run under a 32-bit version of windows like Win 98/2000 etc.
It's a 16-bit compiler. And you will see all your programs have 16-bit pointers. Why is it so when your OS is 32bit? Bec...
Do I need elements in persistence.xml?
...
For those running JPA in Spring, from version 3.1 onwards, you can set packagesToScan property under LocalContainerEntityManagerFactoryBean and get rid of persistence.xml altogether.
Here's the low-down
...
How to know if an object has an attribute in Python
...produce a value. Also, hasattr only suppresses exceptions in general on Py 3.1 and earlier; in 3.2+, it only suppresses (replacing with False return) AttributeError.
– ShadowRanger
Apr 25 '18 at 19:32
...
Case insensitive XPath contains() possible?
...ume that you are only using the 26-letter English alphabet.
UPDATE: XPath 3.1 defines a standard collation URI for case-blind matching.
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Is there any Rails function to check if a partial exists?
...
Currently, I'm using the following in my Rails 3/3.1 projects:
lookup_context.find_all('posts/_form').any?
The advantage over other solutions I've seen is that this will look in all view paths instead of just your rails root. This is important to me as I have a lot of ra...
How to define custom configuration variables in rails
...
This works in rails 3.1:
in config/environment.rb (or in config/environments/.. to target a specific environment) :
YourApp::Application.config.yourKey = 'foo'
This will be accessible in controller or views like this:
YourApp::Applicati...
How do I find the location of Python module sources?
...mp package is deprecated (since version 3.4) in favor of importlib (since 3.1) docs.python.org/3.6/library/imp.html
– michael
Sep 16 '18 at 3:53
How to change the type of a field?
...e to array instead of double to string. My actual data was in this format :3.1 whereas simone code is working fine for me
– Pankaj Khurana
Apr 9 '14 at 9:30
...