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Why do people say that Ruby is slow? [closed]
...un typical benchmarks between Ruby and other languages, Ruby loses.
I do not find Ruby to be slow but then
again, I'm just using it to make
simple CRUD apps and company blogs.
What sort of projects would I need to
be doing before I find Ruby becoming
slow? Or is this slowness just
s...
How to clear the canvas for redrawing
... images on the canvas I'm now trying to remove images and compositing. How do I do this?
23 Answers
...
java.lang.OutOfMemoryError: bitmap size exceeds VM budget - Android
...orking with lots of images if you get the outOfMemory systematically, like doing always the same, then its a leak. If you get it like once a day or something, its because you are too close to the limit. My suggestion in this case is try to remove some stuff and try again. Also Image memory is outs...
Running multiple async tasks and waiting for them all to complete
...
Both answers didn't mention the awaitable Task.WhenAll:
var task1 = DoWorkAsync();
var task2 = DoMoreWorkAsync();
await Task.WhenAll(task1, task2);
The main difference between Task.WaitAll and Task.WhenAll is that the former will block (similar to using Wait on a single task) while the latt...
What is the purpose of a stack? Why do we need it?
...t have the C# compiler write out machine code?
Because it is cheaper to do it this way. Suppose we didn't do it that way; suppose each language has to have its own machine code generator. You have twenty different languages: C#, JScript .NET, Visual Basic, IronPython, F#... And suppose you have t...
How to produce a range with step n in bash? (generate a sequence of numbers with increments)
...
I'd do
for i in `seq 0 2 10`; do echo $i; done
(though of course seq 0 2 10 will produce the same output on its own).
Note that seq allows floating-point numbers (e.g., seq .5 .25 3.5) but bash's brace expansion only allows i...
Are there any SHA-256 javascript implementations that are generally considered trustworthy?
...hat the project has some oversight by someone who actually knows what he's doing. The project is also supported by the NSF.
It's worth pointing out, however...
... that if you hash the password client-side before submitting it, then the hash is the password, and the original password becomes irrele...
how do i remove a comma off the end of a string?
...
$string = rtrim($string, ',');
Docs for rtrim here
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AsyncProcedures异步过程扩展 · App Inventor 2 中文网
...过程的基本模式：
// 异步执行耗时过程
when Button1.Click
do
// 异步调用耗时过程
call AsyncProcedures1.RunProcedure LongRunningProcess
// 异步过程完成后的回调
when AsyncProcedures1.ProcedureCompleted
do
show notification "异步过程执行完成"
...
Why do we need private subnet in VPC?
...address for their outbound Internet access.
The new managed NAT service does not fundamentally change the applicability of the following information, but this option is not addressed in the content that follows. A NAT instance can still be used as described, or the Managed NAT Gateway service ca...