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How do I remove repeated elements from ArrayList?
I have an ArrayList<String> , and I want to remove repeated strings from it. How can I do this?
38 Answers
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How can I determine the current line number in JavaScript?
...nism for determining the line number of the currently executing statement (and if so, what is it)?
8 Answers
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C# Test if user has write access to a folder
... fall down when you use long paths in Windows?
– Alexandru
Apr 20 '15 at 18:18
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That won't tell...
Boolean.hashCode()
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1231 and 1237 are just two (sufficiently large) arbitrary prime numbers. Any other two large prime numbers would do fine.
Why primes?
Suppose for a second that we picked composite numbers (non-primes), say 1000 and 2000. When ins...
Custom toast on Android: a simple example
I'm new to Android programming. What is a simple example showing a custom toast notification on Android?
17 Answers
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Removing list of vms in vagrant cache
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You should use the following command to remove invalid entries from the global index:
vagrant global-status --prune
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count vs length vs size in a collection
From using a number of programming languages and libraries I have noticed various terms used for the total number of elements in a collection.
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When to use window.opener / window.parent / window.top
...hen opening a new window that acted as a dialog which required user input, and needed to pass information back to the main window. However this is restricted by origin policy, so you need to ensure both the content from the dialog and the opener window are loaded from the same origin.
window.paren...
#import using angle brackets < > and quote marks “ ”
..." for files in your project that you've got the implementation source to, and angle brackets <> when you're referencing a library or framework.
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How do I check if a given string is a legal/valid file name under Windows?
...ionality in my application. A user can type a destination filename pattern and (after replacing some wildcards in the pattern) I need to check if it's going to be a legal filename under Windows. I've tried to use regular expression like [a-zA-Z0-9_]+ but it doesn't include many national-specific c...