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Remove last character of a StringBuilder?
...efix = ",";
sb.append(serverId);
}
Alternatively, use the Joiner class from Guava :)
As of Java 8, StringJoiner is part of the standard JRE.
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Proper usage of Optional.ifPresent()
...ingWithUser);
Method ifPresent() get Consumer object as a paremeter and (from JavaDoc): "If a value is present, invoke the specified consumer with the value." Value it is your variable user.
Or if this method doSomethingWithUser is in the User class and it is not static, you can use method refere...
Java Generics (Wildcards)
...deo talk where he mentions the Producer extends Consumer super mnemonic.
From the presentation slides:
Suppose you want to add bulk methods to Stack<E>
void pushAll(Collection<? extends E> src);
– src is an E producer
void popAll(Collection<? super E> dst);
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How to tell git to ignore individual lines, i.e. gitignore for specific lines of code [duplicate]
...ig --global filter.gitignore.smudge cat, i.e. do nothing when pulling file from repo
Notes:
Of course, this is for ruby files, applied when a line ends with #gitignore, applied globally in ~/.gitconfig. Modify this however you need for your purposes.
Warning!!
This leaves your working file diffe...
Do you need break in switch when return is used?
...eference: http://php.net/manual/en/function.return.php says:
If called from within a function, the return() statement immediately ends execution of the current function
)
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Include intermediary (through model) in responses in Django Rest Framework
...field in the serialiser by forcing it to point to the reverse relationship from the through model. I'm not very much into DRF implementation details, but probably with model introspection it could be handed automatically. just some food for thought :)
– gru
Apr...
HTML5: number input type that takes only integers?
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@Zut HTML5 validation doesn't stop you from entering those keys. It just prevents the form from being send with those characters. If you submit a form with an input of the type number that contains other characters, then Chrome will show you an error message.
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Get and Set a Single Cookie with Node.js HTTP Server
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The cookie library is actually from the underlying library connect; you don't need to take all of express to get cookie helper.
– Ajax
Sep 3 '12 at 16:40
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Add Bootstrap Glyphicon to Input Box
...tAwesome introduced breaking changes in Version 4. If you want to upgrade from 3.x to 4.x, you have to change <i class="icon-user"></i> to <i class="fa fa-user"></i>. Anytime you're thinking about updating external libraries, be sure to read the release notes and new docume...
How do I monitor the computer's CPU, memory, and disk usage in Java?
...eratingSystemMXBean.class);
// What % CPU load this current JVM is taking, from 0.0-1.0
System.out.println(osBean.getProcessCpuLoad());
// What % load the overall system is at, from 0.0-1.0
System.out.println(osBean.getSystemCpuLoad());
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