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Check if a path represents a file or a folder
I need a valid method to check if a String represents a path for file or a directory. What are valid directory names in Android? As it comes out, folder names can contain '.' chars, so how does system understand whether there's a file or a folder?
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What is the non-jQuery equivalent of '$(document).ready()'?
...or after sub-resources have finished loading (images, stylesheets, frames, etc).
function domReady(fn) {
// If we're early to the party
document.addEventListener("DOMContentLoaded", fn);
// If late; I mean on time.
if (document.readyState === "interactive" || document.readyState ===...
How to check if a Constraint exists in Sql server?
... "constraints" such as Foreign Key constraints or Primary Key constraints, etc. For best results, always include the appropriate object type as the second parameter for the OBJECT_ID function:
Constraint Object Types:
C = CHECK constraint
D = DEFAULT (constraint or stand-alone)
F = FOREIGN KEY c...
Regular expression to allow spaces between words
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Nice Regex, much simpler then a lot of [0-9a-z] etc
– George
Jul 6 '16 at 1:16
I found in m...
What requests do browsers' “F5” and “Ctrl + F5” refreshes generate?
... request resources within the refreshed page, such as images, stylesheets, etc...
– James Hart
May 20 '11 at 14:54
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List of Rails Model Types
... i wish to add for those reading in future that when creating a migration etc car:references comes in very handy for creating a car_id foreign key.
– BKSpurgeon
Jul 25 '16 at 22:46
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void in C# generics?
...void> instead of Action, Func<T, void> instead of Action<T> etc.
It would also make async simpler - there'd be no need for the non-generic Task type at all - we'd just have Task<void>.
Unfortunately, that's not the way the C# or .NET type systems work...
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Search and replace a line in a file in Python
I want to loop over the contents of a text file and do a search and replace on some lines and write the result back to the file. I could first load the whole file in memory and then write it back, but that probably is not the best way to do it.
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Condition within JOIN or WHERE
Is there any difference (performance, best-practice, etc...) between putting a condition in the JOIN clause vs. the WHERE clause?
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Obtaining a powerset of a set in Java
...re going to iterate it that's obviously O(2^n).
contains() would be O(n), etc.
Do you really need this?
EDIT:
This code is now available in Guava, exposed through the method Sets.powerSet(set).
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