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When does invoking a member function on a null instance result in undefined behavior?
...efined behavior.
Here it's definitely undefined behavior.
The ambiguity comes from whether or not it's undefined behavior to deference but not use the value from an invalid pointer (that is, get an lvalue but not convert it to an rvalue). If not, then int *i = 0; *i; &(*i); is well-defined. T...
Where is the warnings screen option in Android Studio?
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This does not show Java compiler warnings, but Android Lint issues!
– sschuberth
Jan 14 '15 at 13:09
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How to define object in array in Mongoose schema correctly with 2d geo index
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Use of an exclamation mark in a Git commit message via the command line
How do I enter an exclamation point into a Git commit message from the command line?
6 Answers
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Remote debugging a Java application
...pend=n myapp
Two points here:
No spaces in the runjdwp option.
Options come before the class name. Any arguments you have after the class name are arguments to your program!
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Disabling highlighting of current line in the Visual Studio editor
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Gets byte array from a ByteBuffer in java
Is this the recommended way to get the bytes from the ByteBuffer
6 Answers
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Amazon EC2, mysql aborting start because InnoDB: mmap (x bytes) failed; errno 12
...ould like to automatically enable swap file after each reboot.
Some useful command related to SWAP space:
$ swapon -s
$ free -k
$ swapoff -a
$ swapon -a
References:
http://www.thegeekstuff.com/2010/08/how-to-add-swap-space/
http://cloudstory.in/2012/02/getting-the-best-out-of-amazon-ec2-micro...
What is a Lambda?
... not necessarily have to be closures, but they are in most languages and become rather less useful when they aren't.
A lambda is.. not quite so well defined as far as computer science goes. A lot of languages don't even use the term; instead they will just call them closures or anon functions or ...
Calendar.getInstance(TimeZone.getTimeZone(“UTC”)) is not returning UTC time
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