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Objective-C Static Class Level variables
...i can increase the currentID and the change occurs at the class level not object level. Can this be done in Objective-C? I've found it very hard to find an answer for this.
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How do I syntax check a Bash script without running it?
Is it possible to check a bash script syntax without executing it?
8 Answers
8
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Callback after all asynchronous forEach callbacks are completed
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Array.forEach does not provide this nicety (oh if it would) but there are several ways to accomplish what you want:
Using a simple counter
function callback () { console.log('all done'); }
var itemsProcessed = 0;
[1, 2, 3].forEach((item, index, array) => {
asyncFunction(item,...
How do I check if a variable exists?
I want to check if a variable exists. Now I'm doing something like this:
11 Answers
11...
How to find the Number of CPU Cores via .NET/C#?
Is there a way via .NET/C# to find out the number of CPU cores?
11 Answers
11
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What's a monitor in Java?
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A monitor is mechanism to control concurrent access to an object.
This allows you to do:
Thread 1:
public void a()
{
synchronized(someObject) {
// do something (1)
}
}
Thread 2:
public void b()
{
synchronized(someObject) {
// do something else (2)
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What's so bad about Template Haskell?
It seems that Template Haskell is often viewed by the Haskell community as an unfortunate convenience. It's hard to put into words exactly what I have observed in this regard, but consider these few examples
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Check if a temporary table exists and delete if it exists before creating a temporary table
I am using the following code to check if the temporary table exists and drop the table if it exists before creating again. It works fine as long as I don't change the columns. If I add a column later, it will give an error saying "invalid column". Please let me know what I am doing wrong.
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How can I measure the similarity between two images? [closed]
I would like to compare a screenshot of one application (could be a Web page) with a previously taken screenshot to determine whether the application is displaying itself correctly. I don't want an exact match comparison, because the aspect could be slightly different (in the case of a Web app, depe...
How to abort an interactive rebase if --abort doesn't work?
I've got myself into a muddle via an interactive rebase, and I now wish to abort it. (i.e. go back to the point before I was dropped into interactive rebase mode, in my case via git pull --rebase .) The way to do this seems to be via git rebase --abort , but this doesn't work:
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