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What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
...how to avoid it... um, don't do that. Be careful with your array indexes.
One problem people sometimes run into is thinking that arrays are 1-indexed, e.g.
int[] array = new int[5];
// ... populate the array here ...
for (int index = 1; index <= array.length; index++)
{
System.out.println(a...
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
... suite on Ubuntu. I have no knowledge of mySQL at all, actually. I have done the following installations on my Ubuntu.
30...
How to see an HTML page on Github as a normal rendered HTML page to see preview in browser, without
...
Note that this only works for public repos. Private ones will give the error message Error: Cannot load file
– Erik Trautman
Aug 19 '14 at 22:51
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Omit rows containing specific column of NA
...y return rows with no NAs
If you want to eliminate all rows with at least one NA in any column, just use the complete.cases function straight up:
DF[complete.cases(DF), ]
# x y z
# 2 2 10 33
Or if completeFun is already ingrained in your workflow ;)
completeFun(DF, names(DF))
...
How to revert initial git commit?
...
In case anyone gets confused by gman's comments: git update-ref -d HEAD does actually revert the initial commit, but keeps all previously commited changes added to the index. If you want to also remove those changes, just execute a foll...
Remove Project from Android Studio
Does any one know how to remove a project from Android Studio in an attempt to re- export it from Eclipse?
14 Answers
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Fast check for NaN in NumPy
...tains no NaNs, which is my expected input. But I've decided to accept this one anyway, because it catches inf and neginf as well.
– Fred Foo
Jul 18 '11 at 20:27
2
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How to run test methods in specific order in JUnit4?
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(...) The ordering of test-method invocations is not guaranteed, so testOneItemCollection() might be executed before testEmptyCollection(). (...)
Why is it so? Well, I believe that making tests order dependent is a practice that the authors don't want to promote. Tests should be independent, th...
How to disable breadcrumbs in Eclipse
...umbs.css and replace its contents with.
.help_breadcrumbs {
display: none;
}
For the Java Editor breadcrumb, you need to assign a shortcut to the "Toggle Java Editor Breadcrumb" command (I have tested Alt+B, for instance)
That shortcut will make the breadcrumb bar appear/disappear at wil...
ValidateAntiForgeryToken purpose, explanation and example
...functionality which we use in our application for security purposes, so no one can hack our site or invade some critical information.
From Purpose Of ValidateAntiForgeryToken In MVC Application by Harpreet Singh:
Use of ValidateAntiForgeryToken
Let’s try with a simple example to understa...