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Hide Utility Class Constructor : Utility classes should not have a public or default constructor
...c final class FilePathHelper {
private FilePathHelper() {
//not called
}
}
This prevents the default parameter-less constructor from being used elsewhere in your code. Additionally, you can make the class final, so that it can't be extended in subclasses, which is a best practice for ...
What does “async: false” do in jQuery.ajax()?
Specifically, how does it differ from the default ( async: true ) ?
7 Answers
7
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subtract two times in python
...datetime(1,1,1,0,0,0) instead of date.today().
– Akavall
Mar 7 '14 at 18:54
27
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How to remove newlines from beginning and end of a string?
...
String.replaceAll("[\n\r]", "");
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How to use a variable for the database name in T-SQL?
...ropriate datatype than VARCHAR(255) also should use QUOTENAME to deal with all possible database names (and possibly to prevent SQL injection depending on source of the name)
– Martin Smith
Nov 14 '13 at 11:03
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git pull error :error: remote ref is at but expected
...he case-insensitive issue on Windows caused the problem. I fixed it by manually removing the ref in .git\refs\remotes\origin folder and then git pull again.
– Roy Ling
Apr 13 '15 at 5:14
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Format numbers to strings in Python
...}.html'.format(**d)
'http://xxx.yyy.zzz/user/42.html'
Like Python 2.6+, all Python 3 releases (so far) understand how to do both. I shamelessly ripped this stuff straight out of my hardcore Python intro book and the slides for the Intro+Intermediate Python courses I offer from time-to-time. :-)
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How to insert a line break before an element using CSS
...lements. They simply won't go onto the next line. Only solution was to actually append an empty <div></div> in the HTML.
– Adam Reis
Jun 10 '16 at 2:25
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sendmail: how to configure sendmail on ubuntu? [closed]
...guration are located at the following (in case you want to update them manually):
/etc/mail/sendmail.conf
/etc/cron.d/sendmail
/etc/mail/sendmail.mc
You can test sendmail to see if it is properly configured and setup by typing the following into the command line:
$ echo "My test email being sent...
How to stop event propagation with inline onclick attribute?
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The event object is a parameter of the callback. Actually, there is no such thing as the event object in IE because this object is accessible through window.event instead of being a parameter of the function :-)
– Vincent Robert
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