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Is mathematics necessary for programming? [closed]
...th a friend during college days whether advanced mathematics is necessary for any veteran programmer. He used to argue fiercely against that. He said that programmers need only basic mathematical knowledge from high school or fresh year college math, no more no less, and that almost all of programmi...
Rails - Validate Presence Of Association?
...siness requirement that an insert into A requires at least 1 associated record to B. Is there a method I can call to make sure this is true, or do I need to write a custom validation?
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Should I use Java date and time classes or go with a 3rd party library like Joda Time?
...ting a web based system which will be used in countries from all over the world. One type of data which must be stored is dates and times.
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Why doesn't println! work in Rust unit tests?
... happens because Rust test programs hide the stdout of successful tests in order for the test output to be tidy. You can disable this behavior by passing the --nocapture option to the test binary or to cargo test:
#[test]
fn test() {
println!("Hidden output")
}
Invoking tests:
% rustc --test ma...
How to validate an email address using a regular expression?
...owly developed a regular expression that validates MOST email addresses correctly, assuming they don't use an IP address as the server part.
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When should I use File.separator and when File.pathSeparator?
In the File class there are two strings, separator and pathSeparator .
3 Answers
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Best way to represent a fraction in Java?
I'm trying to work with fractions in Java.
26 Answers
26
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Difference between Activity Context and Application Context
...ed to the lifecycle of an Activity. Thus, they have access to different information about the application environment.
If you read the docs at getApplicationContext it notes that you should only use this if you need a context whose lifecycle is separate from the current context. This doesn't apply ...
Is it possible to make a type only movable and not copyable?
...
Preface: This answer was written before opt-in built-in traits—specifically the Copy aspects—were implemented. I've used block quotes to indicate the sections that only applied to the old scheme (the one that applied when the question was asked).
Old:...
Remove Object from Array using JavaScript
...wish to remove the object that includes name Kristian from someArray . For example:
28 Answers
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