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UIPopovercontroller dealloc reached while popover is still visible
...tationController. Then you don't need to keep a reference to the popover because it is managed by the presentation controller.
Code example (works both on iPhone and iPad):
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImage...
What's the difference between .so, .la and .a library files?
I know an .so file is a kind of dynamic library (lots of threads can share such libraries so there is no need to have more than one copy of it in memory). But what is the difference between .a and .la ? Are these all static libraries?
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Image loaded event in for ng-src in AngularJS
I have images looking like <img ng-src="dynamically inserted url"/> . When a single image is loaded, I need to apply iScroll refresh() method so that to make image scrollable.
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ruby system command check exit code
I have a bunch of system calls in ruby such as the following and I want to check their exit codes simultaneously so that my script exits out if that command fails.
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Rails check if yield :area is defined in content_for
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@content_for_whatever is deprecated.
Use content_for? instead, like this:
<% if content_for?(:whatever) %>
<div><%= yield(:whatever) %></div>
<% end %>
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In Python, how do you convert seconds since epoch to a `datetime` object?
The time module can be initialized using seconds since epoch:
4 Answers
4
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How can I get the intersection, union, and subset of arrays in Ruby?
I want to create different methods for a class called Multiset .
3 Answers
3
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How do I revert master branch to a tag in git?
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You can do
git checkout master
git reset --hard tag_ABC
git push --force origin master
Please note that this will overwrite existing history in the upstream repo and may cause problems for other developers who have this repo c...
How to replace a single word under cursor?
...s the previous word and puts you in insert mode where it was. But then you can use ctrl+r, 0 to insert the contents of register 0 (which contain the previously yanked word).
So:
yiw
[move to next word]
ciw
ctrl+r
0
This works better than viwp because after the first usage you can then repeatedl...
Why are there two build.gradle files in an Android Studio project?
....
<PROJECT_ROOT>\build.gradle is a "Top-level build file" where you can add configuration options common to all sub-projects/modules.
If you use another module in your project, as a local library you would have another build.gradle file:
<PROJECT_ROOT>\module\build.gradle
For example ...