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How to split data into training/testing sets using sample function
I've just started using R and I'm not sure how to incorporate my dataset with the following sample code:
23 Answers
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How to read integer value from the standard input in Java
...can also tokenize input with regular expression, etc. The API has examples and there are many others in this site (e.g. How do I keep a scanner from throwing exceptions when the wrong type is entered?).
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How do I reset the scale/zoom of a web app on an orientation change on the iPhone?
When I start my app in portrait mode, it works fine. Then I rotate into landscape and it's scaled up. To get it to scale correctly for the landscape mode I have to double tap on something twice, first to zoom all the way in (the normal double tap behavior) and again to zoom all the way out (again, ...
Is there a method that calculates a factorial in Java?
...ommon example program for beginners. But wouldn't it be useful to have a standard implementation for this one to reuse?
I could use such a method with standard types (Eg. int, long...) and with BigInteger / BigDecimal, too.
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Why does Java switch on contiguous ints appear to run faster with added cases?
... (bytecode instruction tableswitch).
However, once the JIT starts its job and compiles the bytecode into assembly, the tableswitch instruction does not always result in an array of pointers: sometimes the switch table is transformed into what looks like a lookupswitch (similar to an if/else if stru...
Formatting code snippets for blogging on Blogger [closed]
My blog is hosted on Blogger and I frequently post code snippets in C / C# / Java / XML etc. but I find the snippet gets "mangled".
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In Java, is there a way to write a string literal without having to escape quotes?
... of quotation marks inside it. You could escape them all, but it's a pain, and difficult to read.
8 Answers
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How do I round to the nearest 0.5?
I have to display ratings and for that i need increments as follows:
9 Answers
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How is CountDownLatch used in Java Multithreading?
Can someone help me to understand what Java CountDownLatch is and when to use it?
12 Answers
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How to check if a string contains a substring in Bash
... that spaces in the needle string need to be placed between double quotes, and the * wildcards should be outside. Also note that a simple comparison operator is used (i.e. ==), not the regex operator =~.
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