First off, it’s important to understand that there is no single standard H.264 elementary bitstream format. The specification document does contain an Annex, specifically Annex B, that describes one possible format, but it is not an actual requirement. The standard specifies how video is encoded into individual packets. How these packets are stored and transmitted … Read more
Just create a function(magic) {} as a wrapper callback: callWithMagic(function(magic) { return processMagic(magic, 42); }); Or using ECMAScript 6: arrow functions: callWithMagic(magic => processMagic(magic, 42));
The values are sent in the request body, in the format that the content type specifies. Usually the content type is application/x-www-form-urlencoded, so the request body uses the same format as the query string: parameter=value&also=another When you use a file upload in the form, you use the multipart/form-data encoding instead, which has a different format. … Read more
It means the title argument is optional. So if you call the method with no arguments it will use a default value of “Error”. It’s shorthand for writing: if (!title) { title = “Error”; } This kind of shorthand trick with boolean expressions is common in Perl too. With the expression: a OR b it … Read more
The flag Xmx specifies the maximum memory allocation pool for a Java Virtual Machine (JVM), while Xms specifies the initial memory allocation pool. This means that your JVM will be started with Xms amount of memory and will be able to use a maximum of Xmx amount of memory. For example, starting a JVM like … Read more
How to get URL parameter using jQuery or plain JavaScript?
setTimeout(function() { postinsql(topicId); }, 4000) You need to feed an anonymous function as a parameter instead of a string, the latter method shouldn’t even work per the ECMAScript specification but browsers are just lenient. This is the proper solution, don’t ever rely on passing a string as a ‘function’ when using setTimeout() or setInterval(), it’s … Read more
argv and argc are how command line arguments are passed to main() in C and C++. argc will be the number of strings pointed to by argv. This will (in practice) be 1 plus the number of arguments, as virtually all implementations will prepend the name of the program to the array. The variables are … Read more
You need to pass in a pointer to a pointer if you want to do this. void barPush(BarList ** list,Bar * bar) { if (list == NULL) return; // need to pass in the pointer to your pointer to your list. // if there is no move to add, then we are done if (bar … Read more
Using MVC Most of this answer focuses on a direct call to pass a parameter from a calling class to the controller. If instead, you want to decouple the caller and controller and use a more general architecture involving a model class with settable and listenable properties to achieve inter-controller communication, see the following basic … Read more