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What requests do browsers' “F5” and “Ctrl + F5” refreshes generate?
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Generally speaking:
F5 may give you the same page even if the content is changed, because it may load the page from cache. But Ctrl-F5 forces a cache refresh, and will guarantee that if the content is changed, you will get the new content...
Obtaining a powerset of a set in Java
..., since you need to generate, well, 2^n possible combinations. Here's a working implementation, using generics and sets:
public static <T> Set<Set<T>> powerSet(Set<T> originalSet) {
Set<Set<T>> sets = new HashSet<Set<T>>();
if (originalSet.isE...
What is the meaning of symbol $ in jQuery?
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Peter Mortensen
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answered Jun 26 '09 at 13:25
AndreaAndrea
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Test if a vector contains a given element
How to check if a vector contains a given value?
7 Answers
7
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How can I read input from the console using the Scanner class in Java?
...could I read input from the console using the Scanner class? Something like this:
15 Answers
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How to add a button to UINavigationBar?
...itWithTitle:@"Title"];
item.rightBarButtonItem = rightButton;
item.hidesBackButton = YES;
[bar pushNavigationItem:item animated:NO];
But normally you would have a NavigationController, enabling you to write:
UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"Done"
style:U...
How do I change an HTML selected option using JavaScript?
I have option menu like this:
10 Answers
10
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Checking if a string is empty or null in Java [duplicate]
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Correct way to check for null or empty or string containing only spaces is like this:
if(str != null && !str.trim().isEmpty()) { /* do your stuffs here */ }
sh...
Table name as variable
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For static queries, like the one in your question, table names and column names need to be static.
For dynamic queries you should generate the full SQL dynamically, and use sp_executesql to execute it.
Here is an example of a script used to com...
Apply pandas function to column to create multiple new columns?
... edited Jul 13 '19 at 11:33
Make42
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answered Apr 26 '13 at 20:57
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