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Internal typedefs in C++ - good style or bad style?
...equence concept, and you need kludges such as std::array<T,N>. Boost.Range shows how a modern Sequence concept can be defined that T[N] can model, because it doesn't require nested typedefs, nor member functions.
– Marc Mutz - mmutz
Nov 13 '11 at 22:14
...
How many characters can UTF-8 encode?
...sides, the question is directly answered by the table: you just add up the ranges. (They are disjoint to exclude surrogates for UTF-16).
– Tom Blodget
Oct 29 '17 at 17:01
...
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 ) {
$t->start();
}
?>
First Run
12:00:06pm: A -start -sleeps 5
12:00:06pm: B -start -slee...
How to pass arguments to a Button command in Tkinter?
...g the idiom callback=lambda x=x: f(x) as in fs = [lambda x=x: x*2 for x in range(5)] ; print [f() for f in fs]
– gboffi
Nov 10 '14 at 0:34
1
...
What's the point of NSAssert, actually?
...ects if one of the parameters passed to it is not exactly some value (or a range of values) you can put an assert to make sure that value is what you expect it to be, and if it's not then something is really wrong, and so the app quits. Assert can be very useful for debugging/unit testing, and also ...
How do I pass multiple parameters into a function in PowerShell?
...$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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