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How can I use map and receive an index as well in Scala?
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@ziggystar If you're looking for performance you need to trade off some immutability. Look inside the zipWithIndex function. It just uses a var to build a new collection of pairs. You could use the same method of incrementing a var with...
How do I get textual contents from BLOB in Oracle SQL
... it to a correct size (docs.oracle.com/cd/E11882_01/appdev.112/e25788/…) if necessary.
– Mac
Aug 19 '13 at 6:01
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How to check if hex color is “too black”?
...t; 40) {
// pick a different colour
}
EDIT
Since May 2014 tinycolor now has a getBrightness() function, albeit using the CCIR601 weighting factors instead of the ITU-R ones above.
EDIT
The resulting luma value range is 0..255, where 0 is the darkest and 255 is the lightest. Values greater t...
How to create EditText with cross(x) button at end of it?
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If you happen to choose this solution and notice that the image is stretched a lot too much, you should probably use an ImageButton instead of a regular Button.
– personne3000
Apr 23 '13...
NoSQL - MongoDB vs CouchDB [closed]
...s to the NoSQL movement. I have heard lots about MongoDB and CouchDB. I know there are differences between the two. Which do you recommend learning as a first step into the NoSQL world?
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Applications are expected to have a root view controller at the end of application launch
...ate class is imported in main and use NSStringFromClass. That's how Xcode now creates the main.m file. For example: #import "AppDelegate.h and then int retVal = UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
– sho
Dec 21 '11 at 7:5...
How can I make the cursor turn to the wait cursor?
.../ Set cursor as default arrow
Cursor.Current = Cursors.Default;
However, if the hashing operation is really lengthy (MSDN defines this as more than 2-7 seconds), you should probably use a visual feedback indicator other than the cursor to notify the user of the progress. For a more in-depth set of...
Why would one omit the close tag?
...you are implementing some kind payment gateway, and redirect user to a specific URL after successful confirmation by the payment processor. If some kind of PHP error, even a warning, or an excess line ending happens, the payment may remain unprocessed and the user may still seem unbilled. This is al...
How to safely call an async method in C# without await
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If you want to get the exception "asynchronously", you could do:
MyAsyncMethod().
ContinueWith(t => Console.WriteLine(t.Exception),
TaskContinuationOptions.OnlyOnFaulted);
This will allow you to deal with an...
Java how to replace 2 or more spaces with single space in string and delete leading and trailing spa
...ll() uses less memory than doing it the other way around. Not by much, but if this gets called many many times, it might add up, especially if there's a lot of "trimmable whitespace". (Trim() doesn't really get rid of the extra space - it just hides it by moving the start and end values. The underly...