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On showing dialog i get “Can not perform this action after onSaveInstanceState”
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But why does this issue occur? Is it ok to ignore the error? What happens when you do? After all, when clicking, it means that the activity is live and well... Anyway, I've reported about this here because I consider this a bug: code...
How to force garbage collection in Java?
... In my experience, this method always invokes the garbage collector. It does so with enough regularity that my plots of memory use versus number of objects declared are always strictly linear (accounting for padding, etc.).
– Jim Pivarski
Jul 9 '15 at 19:49
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Running MSBuild fails to read SDKToolsPath
... have found that if you only install Windows SDK 7.1 and .NET 4.0. MSBuild does not set proper paths to SDK40ToolsPath and SDK35ToolsPath. To fix it, I had to change a few entries in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSBuild\ToolsVersions\4.0: "SDK40ToolsPath"="$(Registry:HKEY_LOCAL_MACHINE\\SO...
C# Float expression: strange behavior when casting the result float to int
...* 10 in a high precision intermediate form before converting to int. If it does, then the result is 61. If it does not, then the result is 62.
In the second example, the explicit assignment to float forces the rounding to take place before the conversion to integer.
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Why can I change value of a constant in javascript
...nstant references, and arrays and objects are like "lists", modifying them does not change the reference or re-declare the constant.
– adeneo
May 2 '14 at 20:44
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The difference between fork(), vfork(), exec() and clone()
...ry map and creates a new one, it was a needless expense. Nowadays, fork() doesn't copy the memory; it's simply set as "copy on write", so fork()+exec() is just as efficient as vfork()+exec().
clone() is the syscall used by fork(). with some parameters, it creates a new process, with others, it cre...
Why use the 'ref' keyword when passing an object?
...ut a completely different TestRef object";
}
After calling DoSomething, t does not refer to the original new TestRef, but refers to a completely different object.
This may be useful too if you want to change the value of an immutable object, e.g. a string. You cannot change the value of a string on...
How to delete from a text file, all lines that contain a specific string?
...out:
sed '/pattern to match/d' ./infile
To directly modify the file – does not work with BSD sed:
sed -i '/pattern to match/d' ./infile
Same, but for BSD sed (Mac OS X and FreeBSD) – does not work with GNU sed:
sed -i '' '/pattern to match/d' ./infile
To directly modify the file (and cr...
How to resize an image with OpenCV2.0 and Python2.6
...d adopted this example but unfortunately, this code is for OpenCV2.1 and does not seem to be working on 2.0. Here my code:
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What is the difference between aggregation, composition and dependency? [duplicate]
...-) Not saying you are right or wrong, but gees these classifications suck. Does Class/Student == Aggregation?... Not according to JavaPapers.com. javapapers.com/oops/… "A class contains students. A student cannot exist without a class. There exists composition between class and students."
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