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How to check iOS version?
...SClassFromString:
if (NSClassFromString(@"UIPopoverController")) {
// Do something
}
For weakly linked classes, it is safe to message the class, directly. Notably, this works for frameworks that aren't explicitly linked as "Required". For missing classes, the expression evaluates to nil, fail...
Set margins in a LinearLayout programmatically
...st a global utility function that converts dips to px. This is what I have done in all my apps. Android API sucks.
– mxcl
Jan 26 '12 at 12:00
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Download a file with Android, and showing the progress in a ProgressDialog
... application that gets updated. For this I need a simple function that can download a file and show the current progress in a ProgressDialog . I know how to do the ProgressDialog , but I'm not sure how to display the current progress and how to download the file in the first place.
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Rails extending ActiveRecord::Base
I've done some reading about how to extend ActiveRecord:Base class so my models would have some special methods. What is the easy way to extend it (step by step tutorial)?
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How to define two angular apps / modules in one page?
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Only one AngularJS application can be auto-bootstrapped per HTML document. The first ngApp found in the document will be used to define the root element to auto-bootstrap as an application. To run multiple applications in an HTML document you must manually bootstrap them using angular.boot...
What is the difference between a symbolic link and a hard link?
...est and said I knew how a symbolic link behaves and how to create one, but do not understand the use of a hard link and how it differs from a symbolic one.
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Overriding a Rails default_scope
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Short answer: Do not use default_scope unless you really have to. You'll probably be better off with named scopes. With that said, you can use with_exclusive_scope to override the default scope if you need to.
Have a look at this questi...
How to use ADB Shell when Multiple Devices are connected? Fails with “error: more than one device an
...e -s option before shell. It is a very bad user experience that you cannot do this the other way around...
– baptx
Jul 7 '19 at 11:23
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Multiple glibc libraries on a single host
...is very possible to have multiple versions of glibc on the same system (we do that every day).
However, you need to know that glibc consists of many pieces (200+ shared libraries) which all must match. One of the pieces is ld-linux.so.2, and it must match libc.so.6, or you'll see the errors you are...
Should I choose ActivePerl or Strawberry Perl for Windows? [duplicate]
... like to try it out. I read about two rival distributions available for Windows platform (I guess there's just Perl on other OSes :).
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