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Viewing contents of a .jar file
What would be the easiest way to view classes, methods, properties, etc. inside a jar file?
I'm looking for something equivalent to the very useful Lutz Roeder .NET Reflector - for Java
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ALTER TABLE without locking the table?
...ferably in a transaction.
Once finished, recompile any stored procedures, etc that use that table. The execution plans will likely no longer be valid.
EDIT:
Some comments have been made about this limitation being a bit poor. So I thought I'd put a new perspective on it to show why it's how it ...
Callback after all asynchronous forEach callbacks are completed
...ue of the index parameter does not provide the same guarantee, because the order of return of the asynchronous operations is not guaranteed.
Using ES6 Promises
(a promise library can be used for older browsers):
Process all requests guaranteeing synchronous execution (e.g. 1 then 2 then 3)
func...
How can I stop redis-server?
...if you are on ubuntu you can try to restart redis server through init.d:
/etc/init.d/redis-server restart
or stop/start it:
/etc/init.d/redis-server stop
/etc/init.d/redis-server start
On Mac
redis-cli shutdown
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Difference between CC, gcc and g++?
...erms of assembly
code generation, available libraries, language features, etc.?
3 Answers
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How can I get the max (or min) value in a vector?
...1, 2, 3, -1, -2, -3};
If the vector is sorted in ascending or descending order then you can find it with complexity O(1).
For a vector of ascending order the first element is the smallest element, you can get it by v[0] (0 based indexing) and last element is the largest element, you can get it b...
What are the best practices for SQLite on Android?
...ld. You can create multiple subclasses of the one DatabaseManager class in order to have different databases on disk.
Instantiate your subclass and call getDb() to use the SQLiteDatabase class.
Call close() for each subclass you instantiated
The code to copy/paste:
import android.content.Context;...
Why do we need boxing and unboxing in C#?
... a different method overload for each value type (bit, byte, int16, int32, etc etc etc).
Boxing prevented this from happening. And that's why the British celebrate Boxing Day.
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Do I need to explicitly call the base virtual destructor?
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No, destructors are called automatically in the reverse order of construction. (Base classes last). Do not call base class destructors.
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Amazon EC2, mysql aborting start because InnoDB: mmap (x bytes) failed; errno 12
...le
Run swapon /swapfile
Add this line /swapfile swap swap defaults 0 0 to /etc/fstab
Step 4 is needed if you would 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.thegee...