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What are C++ functors and their uses?
...rom class method, actually this is a delegate:
class SomeClass
{
std::string state_;
public:
SomeClass(const char* s) : state_(s) {}
void method( std::string param )
{
std::cout << state_ << param << std::endl;
}
};
SomeClass *inst = new SomeClass("Hi,...
Cross-browser multi-line text overflow with ellipsis appended within a fixed width and height
...see if the text block already fits, otherwise split the text into words or characters and define your bounds (lower=1 word/chars, upper=all words/chars), while ((upper-lower)>1) {let middle=((lower+upper)/2)|0 /*|0 is quick floor*/; if (test(words.slice(0,middle)+'...')) {lower=middle;} else {upp...
Meaning of $? (dollar question mark) in shell scripts
...are both true; [ without an operator checks if the argument is a non-empty string.
– tripleee
Jun 30 '19 at 17:05
...
Calculating text width
...
it's shorter
it works when passing an <input>, <span>, or "string".
it's faster for frequent uses because it reuses an existing DOM element.
Demo: http://jsfiddle.net/philfreo/MqM76/
// Calculate width of text from DOM element or string. By Phil Freo <http://philfreo.com>
$....
UINavigationBar custom back button without title
...ow show whatever you put for initWithTitle, which in this case is an empty string.
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What's the magic of “-” (a dash) in command-line parameters?
.../home | aescrypt -e -p apples -o backup_files.tar.aes - because the piping char | should make the presence of the last dash unnecessary. But without the last dash the command fails. Sounds illogical. Can someone please give me a reference where the naked dash meaning in command lines is explained. I...
What are the performance characteristics of sqlite with very large database files? [closed]
...
The tests involve a single sqlite file with either a single table, or multiple tables. Each table had about 8 columns, almost all integers, and 4 indices.
The idea was to insert enough data until sqlite files were about 50GB.
Single Table
I tried to insert multiple rows into a sqlite file with j...
Getting the PublicKeyToken of .Net assemblies
...
You can get this easily via c#
private static string GetPublicKeyTokenFromAssembly(Assembly assembly)
{
var bytes = assembly.GetName().GetPublicKeyToken();
if (bytes == null || bytes.Length == 0)
return "None";
var publicKeyToken = string.Empty;
...
Differences between TCP sockets and web sockets, one more time [duplicate]
...ou can do message based communication using TCP sockets, but you need some extra layer/encapsulation that is adding framing/message boundary data to the messages so that the original messages can be re-assembled from the pieces. In fact, WebSockets is built on normal TCP sockets and uses frame heade...
Why do people say there is modulo bias when using a random number generator?
... particularly hard to avoid in computing, where numbers are represented as strings of bits: 0s and 1s. Finding truly random sources of randomness is also extremely difficult, but is beyond the scope of this discussion. For the remainder of this answer, assume that there exists an unlimited source of...