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Add Keypair to existing EC2 instance
...S Console access to an account with 2 instances running that I cannot shut down (in production). I would however like to gain SSH access to these instances, is it possible to create a new Keypair and apply it to the instances so I can SSH in? Obtaining the exisiting pem file for the keypair the inst...
How to refresh Android listview?
...
Once again: notifyDataSetChanged() does not work at least not for use practices which are recomended (read not deprecated). If use listview, cursor adapter and content provider you might try something along the lines: gettLoaderManager().restartLoader(). See: ...
Android ListView with different layouts for each row
...tViewTypeCount() - this methods returns information how many types of rows do you have in your list
getItemViewType(int position) - returns information which layout type you should use based on position
Then you inflate layout only if it's null and determine type using getItemViewType.
Look at th...
Python (and Python C API): __new__ versus __init__
...; x
(1, 2)
>>> x.__init__([3, 4])
>>> x # tuple.__init__ does nothing
(1, 2)
>>> y = [1, 2]
>>> y
[1, 2]
>>> y.__init__([3, 4])
>>> y # list.__init__ reinitialises the object
[3, 4]
As to why they're separate (aside from simple historical reaso...
Why JSF calls getters multiple times
... nothing more, exactly as per the Javabeans specification. They should not do any expensive DB/business logic at all. For that the bean's @PostConstruct and/or (action)listener methods should be used. They are executed only once at some point of request-based JSF lifecycle and that's exactly what yo...
node.js execute system command synchronously
...ecSync:
child_process.execSync(command[, options])
You can now directly do this:
const execSync = require('child_process').execSync;
code = execSync('node -v');
and it'll do what you expect. (Defaults to pipe the i/o results to the parent process). Note that you can also spawnSync now.
...
Row Offset in SQL Server
...ven offset? For example, in another type of SQL database, it's possible to do:
16 Answers
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Can a recursive function be inline?
...e specification on a function is just a hint. The compiler can (and often does) completely ignore the presence or absence of an inline qualifier. With that said, a compiler can inline a recursive function, much as it can unroll an infinite loop. It simply has to place a limit on the level to whic...
C# vs Java generics [duplicate]
...
streloksi's link does a great job of breaking down the differences. The quick and dirty summary though is ...
In terms of syntax and usage. The syntax is roughly the same between the languages. A few quirks here and there (most notably in...
How can I use external JARs in an Android project?
...will create a folder called 'Referenced Libraries' within your
project
By doing this, you will not
lose your libraries that are being referenced on your
hard drive whenever you transfer your project to another computer.
For Android Studio
If you are in Android View in project explorer, change i...