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What does “atomic” mean in programming?
...;
Or to synchronize every access to the variable:
public synchronized void setFoo(long value) {
this.foo = value;
}
public synchronized long getFoo() {
return this.foo;
}
// no other use of foo outside of these two methods, unless also synchronized
Or to replace it with an AtomicLong:
...
HashMap get/put complexity
...tainly isn't guaranteed - but it's usually what you should assume when considering which algorithms and data structures to use.
In JDK 8, HashMap has been tweaked so that if keys can be compared for ordering, then any densely-populated bucket is implemented as a tree, so that even if there are lots...
How can I create a correlation matrix in R?
..., y=seq(dim(y)[2]), z=COR, xlab="x column", ylab="y column")
text(expand.grid(x=seq(dim(x)[2]), y=seq(dim(y)[2])), labels=round(c(COR),2))
Edit:
Here is an example of custom row and column labels on a correlation matrix calculated with a single matrix:
png("corplot.png", width=5, height=5, units="...
Getting the count of unique values in a column in bash
...demonstrates so much of the capability of awk.
– David Mann
Apr 29 '13 at 15:30
This script was helpful for me to det...
How to use the CancellationToken property?
...
You can implement your work method as follows:
private static void Work(CancellationToken cancelToken)
{
while (true)
{
if(cancelToken.IsCancellationRequested)
{
return;
}
Console.Write("345");
}
}
That's it. You always need to han...
Calling a Method From a String With the Method's Name in Ruby
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
Is it possible to use Razor View Engine outside asp.net
... generating html. So I wonder, how easy would it be to use the engine outside asp.net in a "normal" .net environment for example to generate text, code,...
...
Stop Visual Studio from mixing line endings in files
...mate, however this option is not a global persistent option and is only valid for the current editor session. All I want is for VS to respect the currently open files line-endings when editing the file.
– Brett Ryan
Oct 25 '10 at 1:26
...
how do you filter pandas dataframes by multiple columns
To filter a dataframe (df) by a single column, if we consider data with male and females we might:
6 Answers
...
XML Validation with XSD in Visual Studio IDE
...s, that is a great detailed explanation, but mine still isn't working. I didn't know you could get to the schemas list from properties like that.
– Jim McKeeth
Jul 1 '10 at 20:49
...