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getting exception “IllegalStateException: Can not perform this action after onSaveInstanceState”
... working perfectly for API < 11, and Force Closing on API > 11.
I really couldn't figure out what they changed inside the Activity lifecycle in the call to saveInstance, but I here is how I solved this :
@Override
protected void onSaveInstanceState(Bundle outState) {
//No call for super(...
When is std::weak_ptr useful?
...want to keep them in memory, so you hold a strong pointer to them. Periodically, you scan the cache and decide which objects have not been accessed recently. You don't need to keep those in memory, so you get rid of the strong pointer.
But what if that object is in use and some other code holds a s...
How can I expand the full path of the current file to pass to a command in Vim?
...ught me here, this should be the chosen answer.
– doc_id
Mar 2 '13 at 1:15
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Display block without 100% width
... gets positioned before the last span. Guess one solution would be to make all child elements in the li float.
– Staffan Estberg
Oct 3 '12 at 17:01
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How to determine if one array contains all elements of another array
...
Perhaps this is easier to read:
a2.all? { |e| a1.include?(e) }
You can also use array intersection:
(a1 & a2).size == a1.size
Note that size is used here just for speed, you can also do (slower):
(a1 & a2) == a1
But I guess the first is more re...
Getting one value from a tuple
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You can write
i = 5 + tup()[0]
Tuples can be indexed just like lists.
The main difference between tuples and lists is that tuples are immutable - you can't set the elements of a tuple to different values, or add or remove elements like you can from a list. But other th...
CALayers didn't get resized on its UIView's bounds change. Why?
...you sure? it sounds like you are describing frame. bounds should, theoretically, always have 0,0 as its origin.
– griotspeak
Feb 11 '12 at 2:32
3
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Hidden Features of C#? [closed]
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This isn't C# per se, but I haven't seen anyone who really uses System.IO.Path.Combine() to the extent that they should. In fact, the whole Path class is really useful, but no one uses it!
I'm willing to bet that every production app has the following code, even though it shoul...
std::mutex 加锁抛 _DEVICE_OR_RESOURCE_BUSY 异常 - C/C++ - 清泛网 - 专注C/C++及内核技术
std::mutex 加锁抛 _DEVICE_OR_RESOURCE_BUSY 异常device_or_resource_busy最近遇到一个崩溃，在 std::lock_guard<std::mutex> lock(mutex_); 的地方，抛出了_DEVICE_OR_RESOURCE_BUSY 的异常。最终查出原因是：同一个线程对同一个mutex二次加锁导致的 最近遇到...
use of deleted function std::unique_ptr 编译错误剖析，你可能少了一个st...
use of deleted function std::unique_ptr 编译错误剖析，你可能少了一个std::move编译报错日志如下： usr include c++ 4 7 bits stl_construct h:77:7: error: use of deleted function & 39;std::unique_ptr<_Tp, _Dp>::unique_ptr(const std::unique_p 编译报错日志如下：
/usr/...