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How to remove duplicate white spaces in string using Java?
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Like this:
yourString = yourString.replaceAll("\\s+", " ");
For example
System.out.println("lorem ipsum dolor \n sit.".replaceAll("\\s+", " "));
outputs
lorem ipsum dolor sit.
What does that \s+ mean?
\s+ is a regular expression. \s matches a space, tab...
“document.getElementByClass is not a function”
...t a function
in older browsers, though, in which case you can provide a fallback implementation if you need to support those older browsers.
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Fast permutation -> number -> permutation mapping algorithms
... In general, the k'th digit will have base b[k] = k + 2. The highest value allowed for digit k is h[k] = b[k] - 1 = k + 1.
Our rule about the weights w[k] of digits requires that the sum of h[i] * w[i], where i goes from i = 0 to i = k, is equal to 1 * w[k+1]. Stated recurrently, w[k+1] = w[k] + h[...
How do I configure Maven for offline development?
...ection to the internet at some point to be able to use it? Meaning specifically getting the internal maven plugins for compiling, cleaning, packaging, etc?
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Best way to store time (hh:mm) in a database
...e, but what's the best way to do this without storing more info than I actually need?
15 Answers
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Why do I need an IoC container as opposed to straightforward DI code? [closed]
...ain can become nested, and it quickly becomes unwieldy to wire them up manually. Even with factories, the duplication of your code is just not worth it.
IoC containers can be complex, yes. But for this simple case I've shown it's incredibly easy.
Okay, let's justify this even more. Let's say ...
How to debug an apache virtual host configuration?
...d (Ubuntu)
apache2ctl -t
# MacOS
apachectl -t
List virtual hosts
To list all virtual hosts, and their locations:
# Red Hat-based (Fedora, CentOS) and OSX
httpd -S
# Debian-based (Ubuntu)
apache2ctl -S
# MacOS
apachectl -S
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How can I check the syntax of Python script without executing it?
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import script, but all code must be in functions. Which is good practice anyway. I've even adopted this for shell scripts. From here it's a small step to unit testing.
– Henk Langeveld
Aug 10 '12 at 12:07
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Selecting data from two different servers in SQL Server
...ddlinkedserver.
You only have to set up one. Once you have that, you can call a table on the other server like so:
select
*
from
LocalTable,
[OtherServerName].[OtherDB].[dbo].[OtherTable]
Note that the owner isn't always dbo, so make sure to replace it with whatever schema you use.
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Are global variables bad? [closed]
...s to these, it becomes increasingly hard to figure out which functions actually read and write these variables.
To understand how the application works, you pretty much have to take into account every function which modifies the global state. That can be done, but as the application grows it will ...