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How can one use multi threading in PHP applications
...
// Create a array
$stack = array();
//Initiate Multiple Thread
foreach ( range("A", "D") as $i ) {
$stack[] = new AsyncOperation($i);
}
// Start The Threads
foreach ( $stack as $t ) {
$t->start();
}
?>
First Run
12:00:06pm: A -start -sleeps 5
12:00:06pm: B -start -slee...
How to pass arguments to a Button command in Tkinter?
...g the idiom callback=lambda x=x: f(x) as in fs = [lambda x=x: x*2 for x in range(5)] ; print [f() for f in fs]
– gboffi
Nov 10 '14 at 0:34
1
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What's the point of NSAssert, actually?
...ects if one of the parameters passed to it is not exactly some value (or a range of values) you can put an assert to make sure that value is what you expect it to be, and if it's not then something is really wrong, and so the app quits. Assert can be very useful for debugging/unit testing, and also ...
How do I pass multiple parameters into a function in PowerShell?
...$Name,
[Parameter(Mandatory=$true, Position=1)]
[ValidateRange(10,100)]
[int] $Id
)
}
In the first example, ValidatePattern accepts a regular expression that assures the supplied parameter matches what you're expecting. If it doesn't, an intuitive exception is throw...
Why are there no ++ and -- operators in Python?
... i < 10; ++i) in Python very often; instead you do things like for i in range(0, 10).
Since it's not needed nearly as often, there's much less reason to give it its own special syntax; when you do need to increment, += is usually just fine.
It's not a decision of whether it makes sense, or whet...
How to execute multi-line statements within Python's own debugger (PDB)
...ou can execute a multi-line statement with the following syntax.
for i in range(5): print("Hello"); print("World"); print(i)
Note: When I'm inside the interpreter, I have to hit return twice before the code will execute. Inside the debugger, however, I only have to hit return once.
...
Invoke(Delegate)
...Try doing it from any other
thread and you'll get unpredictable behavior ranging from deadlock, to
exceptions to a half updated UI. The right way then to update a
control from another thread is to post an appropriate message to the
application message queue. When the message pump gets around...
Scatterplot with marginal histograms in ggplot2
...gplot()+geom_histogram(aes(rnorm(100)))+coord_flip()
Then use the grid.arrange function:
grid.arrange(hist_top, empty, scatter, hist_right, ncol=2, nrow=2, widths=c(4, 1), heights=c(1, 4))
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How to delete large data of table in SQL without log?
... to be sure that you are deleting 80-90% of data? Let's assume i have only range of values that should be deleted. And i have a few tables. So i have to check every of them and calculate percentage, and if it around 30% i guess this method is not very effective... I'm trying to find optimal solution...
(How) can I count the items in an enum?
... the integer values of the enum values would be way out of the array index range. Using enum values for array indexing is not safe, you should consider other options.
edit: as requested, made the special entry stick out more.
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