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Why can't variable names start with numbers?
... with a digit. One way to do it might be to allow anything matching [A-Za-z_]+ that is NOT a keyword or number literal. The problem is that it would lead to weird things like 0xdeadpork being allowed, but not 0xdeadbeef. Ultimately, I think we should be fair to all meats :P.
When I was first learni...
Python: How to create a unique file name?
...ry clear, but if all you need is a unique file name...
import uuid
unique_filename = str(uuid.uuid4())
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HtmlSpecialChars equivalent in Javascript?
...
Underscore.js provides a function for this:
_.escape(string)
Escapes a string for insertion into HTML, replacing &, <, >, ", and ' characters.
http://underscorejs.org/#escape
It's not a built-in Javascript function, but if you are already usin...
Fastest way to iterate over all the chars in a String
...ings {
// we will not test strings longer than 512KM
final int MAX_STRING_SIZE = 1024 * 256;
// for each string size, we will do all the tests
// this many times
final int TRIES_PER_STRING_SIZE = 1000;
public static void main(String[] args) throws Exception {
new T...
Why do I get “unresolved external symbol” errors when using templates? [duplicate]
...
@jbx I'm saying that for things like basic_string<T> you're only ever going to be using it with char or wchar_t so if putting all the implementation in the header is a concern, instantiating it in the cpp is an option. The code is yours to command, not vice-ve...
Why should I use a pointer rather than the object itself?
...inters?
The important take-home message is that you should always use the appropriate tool for the job. In almost all situations, there is something more appropriate and safer than performing manual dynamic allocation and/or using raw pointers.
Dynamic allocation
In your question, you've demonstr...
Can I store images in MySQL [duplicate]
...Ex:
CREATE TABLE 'test'.'pic' (
'idpic' INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
'caption' VARCHAR(45) NOT NULL,
'img' LONGBLOB NOT NULL,
PRIMARY KEY ('idpic')
)
As others have said, its a bad practice but it can be done. Not sure if this code would scale well, though.
...
What's the best way to cancel event propagation between nested ng-click calls?
...rl" class="overlay" ng-click="hideOverlay()">
<img src="http://some_src" ng-click="nextImage($event)"/>
</div>
$scope.nextImage = function($event) {
$event.stopPropagation();
// Some code to find and display the next image
}
...
Scala: Abstract types vs generics
...T
...
}
and
class List[T] {...}
Then ListT is just the same as List[_].
The convience of type members is that we can use class without explicit concrete type and
avoid too many type parameters.
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Can I see changes before I save my file in Vim?
...
http://vim.wikia.com/wiki/Diff_current_buffer_and_the_original_file
Here is a function and command to see a diff between the currently edited file and its unmodified version in the filesystem. Just put this in your vimrc or in the plugin directory, op...