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How to gracefully handle the SIGKILL signal in Java
...n hook. If you can use (SIGTERM) kill -15 the shutdown hook will work. (SIGINT) kill -2 DOES cause the program to gracefully exit and run the shutdown hooks.
Registers a new virtual-machine shutdown hook.
The Java virtual machine shuts down in response to two kinds of events:
The pr...
When to use static classes in C# [duplicate]
...not pose any risk to bloat are excellent cases for static methods - System.Convert as an example. If your project is a one-off with no requirements for future maintenance, the overall architecture really isn't very important - static or non static, doesn't really matter - development speed does, how...
Java: Class.this
...ble!";
}
}
As you can see, when the compiler takes an inner class it converts it to an outer class (this was a design decision made a LONG time ago so that VMs did not need to be changed to understand inner classes).
When a non-static inner class is made it needs a reference to the parent so ...
Why use make over a shell script?
...llel programming language.
Let's say that you have 4,000 graphic files to convert and 4 CPUs. Try writing a 10-line shell script (I'm being generous here) that will do it reliably while saturating your CPUs.
Perhaps the real question is why do people bother writing shell scripts.
...
More elegant way of declaring multiple variables at the same time
...
If you have a list of values, you can still unpack them. You just have to convert it to a tuple first. For example, the following will assign a value between 0 and 9 to each of a through j, respectively:
a, b, c, d, e, f, g, h, i, j = tuple(range(10))
EDIT: Neat trick to assign all of them as tr...
Select by partial string from a pandas DataFrame
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Is it possible to convert .str.contains to use .query() api?
– zyxue
Mar 1 '17 at 17:25
3
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Linq to Entities join vs groupjoin
...eused in the above statement. Doing this, any join statement can simply be converted to an outer join by adding the equivalent of into g from c in g.DefaultIfEmpty() to an existing join statement.
This is where query (or comprehensive) syntax shines. Method (or fluent) syntax shows what really happe...
Validating an XML against referenced XSD in C#
...I had do this kind of automatic validation in VB and this is how I did it (converted to C#):
XmlReaderSettings settings = new XmlReaderSettings();
settings.ValidationType = ValidationType.Schema;
settings.ValidationFlags = settings.ValidationFlags |
Schema.XmlSchemaValida...
Why must we define both == and != in C#?
...he language designers, but from what I can reason on, it seems like it was intentional, proper design decision.
Looking at this basic F# code, you can compile this into a working library. This is legal code for F#, and only overloads the equality operator, not the inequality:
module Module1
type...
What blocks Ruby, Python to get Javascript V8 speed? [closed]
...ringing Jython, IronPython, and PyPy up to speed, waiting for libraries to convert to Python 3, and evangelizing Python 3.
– Rafe Kettler
Mar 2 '11 at 23:28
2
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