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App can't be opened because it is from an unidentified developer
... Great, "System Preferences... > Security & Privacy" option does not work always but this method does.
– Adnan
Feb 22 '14 at 20:48
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What is the most efficient string concatenation method in python?
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What does "fast enough" mean for .join()? The main question is, does it a) create a copy of the string for concatenation (similar to s = s + 'abc'), which requires O(n) runtime, or b) simply append to the existing string without c...
When to call activity context OR application context?
...you go:
It's not a complete Context, supporting everything that Activity does. Various things you will try to do with this Context will fail, mostly related to the GUI.
It can create memory leaks, if the Context from getApplicationContext() holds onto something created by your calls on it that you...
Equivalent of “throw” in R
How does one "throw" an error in R? I have a function that takes a data frame and some column names and does stuff with them. If the columns don't exist, I want the function to stop and to stop all functions depending on it.
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UnicodeDecodeError, invalid continuation byte
Why is the below item failing? Why does it succeed with "latin-1" codec?
10 Answers
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Rails layouts per action?
...no it's not, I already referenced that solution in the question itself. It does not work if you want to use 3 or more different layouts (as is exactly my case).
– mrbrdo
Oct 6 '16 at 23:14
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Convert Long into Integer
...ue() : null;
or if you don't need to worry about null:
// auto-unboxing does not go from Long to int directly, so
Integer i = (int) (long) theLong;
And in both situations, you might run into overflows (because a Long can store a wider range than an Integer).
Java 8 has a helper method that che...
Getting “cannot find Symbol” in Java project in Intellij
...ing Compile'' (shift-cmd-F9 on mac) fixed it. It seems the compile on save does not 'see' non-compiled files.
Marking the src folder as source did not help in my case.
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Why is creating a Thread said to be expensive?
...ed by the call to pthread_create that creates the native thread. (The JVM does not pass pthread_create a preallocated stack.)
Then, within pthread_create the stack is allocated by a call to mmap as follows:
mmap(0, attr.__stacksize,
PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE|MAP_ANON...
How to make a smooth image rotation in Android?
...l Note: If your rotate animation is inside a set, setting the interpolator does not seem to work. Making the rotate the top element fixes it. (this will save your time.)
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