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How can I check if a Perl array contains a particular value?
I am trying to figure out a way of checking for the existence of a value in an array without iterating through the array.
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Why would iterating over a List be faster than indexing through it?
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In a linked list, each element has a pointer to the next element:
head -> item1 -> item2 -> item3 -> etc.
To access item3, you can see clearly that you need to walk from the head through every node until you reach item...
Generic List - moving an item within the list
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I know you said "generic list" but you didn't specify that you needed to use the List(T) class so here is a shot at something different.
The ObservableCollection(T) class has a Move method that does exactly what you want.
pub...
MySQL Error 1215: Cannot add foreign key constraint
...erything I've found has said to either set the db engine to Innodb or to make sure the keys I'm trying to use as a foreign key are primary keys in their own tables. I have done both of these things, if I'm not mistaken. Any other help you guys could offer?
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Set keyboard caret position in html textbox
Does anybody know how to move the keyboard caret in a textbox to a particular position?
9 Answers
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Is it possible dynamically to add String to String.xml in Android?
...l number. You can format the string with arguments from your application like this:
Resources res = getResources();
String text = String.format(res.getString(R.string.welcome_messages), username, mailCount);
Basic Usage
Note that getString has an overload that uses the string as a format string...
No Multiline Lambda in Python: Why not?
...clash syntactically with the other syntax constructs in Python. I was thinking about this on the bus today and realized I couldn't think of a single Python construct that multiline lambdas clash with. Given that I know the language pretty well, this surprised me.
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How to shut down the computer from C#
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Works starting with windows XP, not available in win 2000 or lower:
This is the quickest way to do it:
Process.Start("shutdown","/s /t 0");
Otherwise use P/Invoke or WMI like others have said.
Edit: how to avoid creatin...
When should one use HTML entities?
...ities if your editor supports Unicode. Entities can be useful when:
Your keyboard does not support the character you need to type. For example, many keyboards do not have em-dash or the copyright symbol.
Your editor does not support Unicode (very common some years ago, but probably not today).
You...
Why does Boolean.ToString output “True” and not “true”
Is there a valid reason for it being "True" and not "true"? It breaks when writing XML as XML's boolean type is lower case , and also isn't compatible with C#'s true/false (not sure about CLS though).
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