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How to check if a string is a valid hex color representation?
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/^#[0-9A-F]{6}$/i.test('#AABBCC')
To elaborate:
^ -> match beginning
# -> a hash
[0-9A-F] -> any integer from 0 to 9 and any letter from A to F
{6} -> the previous group appears exactly 6 times
$ ...
How do I test which class an object is in Objective-C?
How do I test whether an object is an instance of a particular class in Objective-C? Let's say I want to see if object a is an instance of class b, or class c, how do I go about doing it?
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Copy existing project with a new name in Android Studio
...p on my device. I want to have both apps simultaneously on the device (for testing chrome custom tabs). How can I force Android Studio to have both apps at once on the device?
– Locksleyu
May 1 '18 at 13:55
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Difference in months between two dates
...365.25 / 12)
Note, if you were to use the latter solution then your unit tests should state the widest date range which your application is designed to work with and validate the results of the calculation accordingly.
Update (with thanks to Gary)
If using the 'average months' method, a slight...
How to reverse a 'rails generate'
...e ("p" for pretend).
If you add this to the command it will simply do a "test" run and show you what files will be deleted without actually deleting them.
$ rails d controller welcome -p
remove app/controllers/welcome_controller.rb
invoke erb
remove app/views/welcome
invoke test_un...
How to test if a double is an integer
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In Sonar, this produces an issue "Equality tests should not be made with floating point values."
– Julio D
Jul 12 '17 at 9:56
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Why do you need to invoke an anonymous function on the same line?
...y inside the mySum function body, not outside. See following example:
var test1 = function test2() { alert(typeof test2); }
alert(typeof(test2)); //alerts 'undefined', surprise!
test1(); //alerts 'function' because test2 is a function.
Live Demo
Compare this to
function test1() { alert(type...
How do I convert CamelCase into human-readable names in Java?
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This works with your testcases:
static String splitCamelCase(String s) {
return s.replaceAll(
String.format("%s|%s|%s",
"(?<=[A-Z])(?=[A-Z][a-z])",
"(?<=[^A-Z])(?=[A-Z])",
"(?<=[A-Za-z])(?=[^A-Za-z])"...
File content into unix variable with newlines
I have a text file test.txt with the following content:
6 Answers
6
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What is monkey patching?
...ample), and various other methods in the class call it. However, in a unit test, you don't want to depend on the external data source - so you dynamically replace the get_data method with a stub that returns some fixed data.
Because Python classes are mutable, and methods are just attributes of the...