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Apache Spark: The number of cores vs. the number of executors
I'm trying to understand the relationship of the number of cores and the number of executors when running a Spark job on YARN.
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How do you import classes in JSP?
...you are importing a List into a JSP, chances are pretty good that you are violating MVC principles. Take a few hours now to read up on the MVC approach to web app development (including use of taglibs) - do some more googling on the subject, it's fascinating and will definitely help you write bette...
Archives not showing up in Organizer for Xcode 4
...ying to create an IPA in Xcode 4, much like the person who asked this question:
20 Answers
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Disable a Button
I want to disable a button ( UIButton ) on iOS after it is clicked. I am new to developing for iOS but I think the equivalent code on objective - C is this:
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Comet and jQuery [closed]
...king for lies in the "Comet" design pattern. Are there any good implementations of this pattern built on top of jQuery? If not, are there any good implementations of this pattern at all? And regardless of the answer to those questions, is there any documentation on this pattern from an implementatio...
Generate a random alphanumeric string in Cocoa
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Here's a quick and dirty implementation. Hasn't been tested.
NSString *letters = @"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
-(NSString *) randomStringWithLength: (int) len {
NSMutableString *randomString = [NSMutableString string...
Warning :-Presenting view controllers on detached view controllers is discouraged
In my app, I am using a navigation controller. Later on in some view I am using presentViewController for showing a zoomed image.
Also I am not using a Storyboard or nib.
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Javascript for “Add to Home Screen” on iPhone?
Is it possible to use Javascript to emulate the Add to Home Screen option in Mobile Safari's bookmark menu?
6 Answers
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iPhone: How to get current milliseconds?
...as a double. I'm almost sure you can access the milliseconds from the fractional part.
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Retrieving the inherited attribute names/values using Java Reflection
...ues of ChildObj, including the inherited attributes too, using Java reflection mechanism?
14 Answers
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