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How to set up Spark on Windows?
...ce.
You can pretty much follow this guide: http://spark.apache.org/docs/latest/building-spark.html
Download and install Maven, and set MAVEN_OPTS to the value specified in the guide.
But if you're just playing around with Spark, and don't actually need it to run on Windows for any other reason th...
View contents of database file in Android Studio
...er from your Github link is working for me! It also has the opportunity to test queries!
– basti12354
Jan 14 '17 at 11:04
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show 5 more comm...
Why does C# forbid generic attribute types?
...u vastly underestimate the cost of designing, specifying, implementing and testing a new language feature.
– Jon Skeet
Aug 8 '11 at 16:08
14
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How to search file text for a pattern and replace it with a given value
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There are a lot of ways this can go wrong so test it thoroughly before attempting it against a critical file.
– the Tin Man
Dec 6 '19 at 20:04
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Is it possible to use JavaScript to change the meta-tags of the page?
...dd personalized content here. Example:
<!DOCTYPE html>
<title>Test</title>
<meta name="description" content="this is old">
<script type='text/javascript' src='http://code.jquery.com/jquery-1.8.2.js'></script>
<button>Change description</button>
<...
Where is JAVA_HOME on macOS Mojave (10.14) to Lion (10.7)?
Java is an optional package on the latest versions of macOS.
26 Answers
26
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Including all the jars in a directory within the Java classpath
...e following:
Use straight quotes (")
Use *, not *.jar
Windows
java -cp "Test.jar;lib/*" my.package.MainClass
Unix
java -cp "Test.jar:lib/*" my.package.MainClass
This is similar to Windows, but uses : instead of ;. If you cannot use wildcards, bash allows the following syntax (where lib is the ...
Linear Regression and group by in R
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Inside the function you'd need to test for that case and use a different formula
– hadley
Mar 14 '13 at 15:24
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How to delete migration files in Rails 3
...ust revert it on all environments it already ran (production, development, testing, staging, etc) before deleting its file. That's also why I wrote that it's safer to just create another migration to revert that old one, once it's already ran on production.
– Fábio Batista
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Do Java arrays have a maximum size?
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Haven't seen the right answer, even though it's very easy to test.
In a recent HotSpot VM, the correct answer is Integer.MAX_VALUE - 5. Once you go beyond that:
public class Foo {
public static void main(String[] args) {
Object[] array = new Object[Integer.MAX_VALUE - 4];
}
...