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How can I concatenate two arrays in Java?
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Here's a simple method that will concatenate two arrays and return the result:
public <T> T[] concatenate(T[] a, T[] b) {
int aLen = a.length;
int bLen = b.length;
@SuppressWarnings("unchecked")
T[] c = (T[]) Array.newInstance(a.getClass().getComponentType(...
Android: Clear Activity Stack
I'm having several activities in my application. and flow is very complicated. When I click the Logout application navigates to login Screen and from there user can exit by cancel button (calling system.exit(0) )
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Regular Expression: Any character that is NOT a letter or number
...h anything other than letter or number you could try this:
[^a-zA-Z0-9]
And to replace:
var str = 'dfj,dsf7lfsd .sdklfj';
str = str.replace(/[^A-Za-z0-9]/g, ' ');
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When to use window.opener / window.parent / window.top
...hen opening a new window that acted as a dialog which required user input, and needed to pass information back to the main window. However this is restricted by origin policy, so you need to ensure both the content from the dialog and the opener window are loaded from the same origin.
window.paren...
Does Spring @Transactional attribute work on a private method?
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The Question is not private or public, the question is: How is it invoked and which AOP implementation you use!
If you use (default) Spring Proxy AOP, then all AOP functionality provided by Spring (like @Transactional) will only be taken into account if the call goes through the proxy. -- This is n...
How to color the Git console?
...the Unix & Linux Stackexchange question How to colorize output of git? and the answer by @Evgeny:
git config --global color.ui auto
The color.ui is a meta configuration that includes all the various color.* configurations available with git commands. This is explained in-depth in git help ...
Replace a value in a data frame based on a conditional (`if`) statement
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Easier to convert nm to characters and then make the change:
junk$nm <- as.character(junk$nm)
junk$nm[junk$nm == "B"] <- "b"
EDIT: And if indeed you need to maintain nm as factors, add this in the end:
junk$nm <- as.factor(junk$nm)
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Submit form using a button outside the tag
...ubmit> or <input type="submit"> element whithin the <form>, and an associated <label> element outside of it. It would look like this:
<form method="get" action="something.php">
<input type="text" name="name" />
<input type="submit" id="submit-form" clas...
Detect Safari using jQuery
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Using a mix of feature detection and Useragent string:
var is_opera = !!window.opera || navigator.userAgent.indexOf(' OPR/') >= 0;
var is_Edge = navigator.userAgent.indexOf("Edge") > -1;
var is_chrome = !!window.chrome && !is_opera...
Printing newlines with print() in R
.../program F=filename")
File not supplied.
Usage: ./program F=filename>
and
> cat("File not supplied.\nUsage: ./program F=filename","\n")
File not supplied.
Usage: ./program F=filename
>
The reason print() doesn't do what you want is that print() shows you a version of the object from th...