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How to convert an NSString into an NSNumber
...numberStyle = NSNumberFormatterDecimalStyle;
NSNumber *myNumber = [f numberFromString:@"42"];
If the string is not a valid number, then myNumber will be nil. If it is a valid number, then you now have all of the NSNumber goodness to figure out what kind of number it actually is.
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How to set a JavaScript breakpoint from code in Chrome?
... said, debugger; is the way to go.
I wrote a small script that you can use from the command line in a browser to set and remove breakpoint right before function call:
http://andrijac.github.io/blog/2014/01/31/javascript-breakpoint/
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How to pass arguments from command line to gradle
I'm trying to pass an argument from command line to a java class. I followed this post: http://gradle.1045684.n5.nabble.com/Gradle-application-plugin-question-td5539555.html but the code does not work for me (perhaps it is not meant for JavaExec?). Here is what I tried:
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javascript remove “disabled” attribute from html input
How can I remove the "disabled" attribute from an HTML input using javascript?
5 Answers
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How to obtain the number of CPUs/cores in Linux from the command line?
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@CiroSantilli六四事件法轮功纳米比亚威视 From github.com/gstrauss/plasma/blob/master/plasma_sysconf.c it looks like I was wrong: it's only optional. "sysconf _SC_NPROCESSORS_ONLN and _SC_NPROCESSORS_CONF are not required by standards, but are provided on numerous un...
getting the screen density programmatically in android?
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You can get info on the display from the DisplayMetrics struct:
DisplayMetrics metrics = getResources().getDisplayMetrics();
Though Android doesn't use a direct pixel mapping, it uses a handful of quantized Density Independent Pixel values then scales to...
Why do you not use C for your web apps?
.... That means you pay more.
Also, C doesn't have the benefit of drawing from an enormous single standard library of functionality as .NET (and the other major web-centric platforms) has. So you may have to either buy components, or perform interop, or roll your own functionality which comes "for...
Iterating through a Collection, avoiding ConcurrentModificationException when removing objects in a
....next();
if (string.isEmpty()) {
// Remove the current element from the iterator and the list.
iterator.remove();
}
}
Note that Iterator.remove() is the only safe way to modify a collection during iteration; the behavior is unspecified if the underlying collection is modifi...
Reading CSV files using C#
...e in my C# projects.
Here are some more links/informations:
MSDN: Read From Comma-Delimited Text Files in Visual Basic
MSDN: TextFieldParser Class
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Devise - How do I forbid certain users from signing in?
...og in."
end
I think that is quite important because the standard message from Devise says:
"Your account is not activated yet."
That is confusing for users and the real reason is that you have "banned" them from logging in.
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