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What is the use of interface constants?
...erface causes this implementation detail to leak into the class's exported API. It is of no consequence to the users of a class that the class implements a constant interface. In fact, it may even confuse them. Worse, it represents a commitment: if in a future release the class is modified so that i...
File path to resource in our war/WEB-INF folder?
...le is expanded (a set of files instead of one .war file), you can use this API:
ServletContext context = getContext();
String fullPath = context.getRealPath("/WEB-INF/test/foo.txt");
http://tomcat.apache.org/tomcat-5.5-doc/servletapi/javax/servlet/ServletContext.html#getRealPath(java.lang.String)...
Rails: How to change the text on the submit button in a Rails Form
... I can't believe this very simple thing isn't in the fricking API docs for this method.
– Grant Birchmeier
Mar 15 '13 at 18:14
4
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How to record webcam and audio using webRTC and a server-based Peer connection
...of overkill, especially considering the fact that Chrome has MediaRecorder API support from v47 and Firefox since v25. So at this junction, you might not even need an external js library to do the job, try this demo I made to record video/ audio using MediaRecorder:
Demo - would work in chrome and ...
How to convert milliseconds to “hh:mm:ss” format?
...onds using minutes instead of hours.
BTW, I like your use of the TimeUnit API :)
Here's some test code:
public static void main(String[] args) throws ParseException {
long millis = 3600000;
String hms = String.format("%02d:%02d:%02d", TimeUnit.MILLISECONDS.toHours(millis),
Tim...
Create objective-c class instance by name?
...cleaner, then you could utilize the Objective-C language runtime library's API. Under Objective-C 2.0:
#import <objc/runtime.h>
//Declaration in the above named file
id objc_getClass(const char* name);
//Usage
id c = objc_getClass("Object");
[ [ c alloc ] free ];
Under the Objective-C (1.0...
What is __declspec and when do I need to use it?
... used at the same level as the export keyword.
/** Declare a public MRuby API function. */
#if defined(MRB_BUILD_AS_DLL)
#if defined(MRB_CORE) || defined(MRB_LIB)
# define MRB_API __declspec(dllexport)
#else
# define MRB_API __declspec(dllimport)
#endif
#else
# define MRB_API extern
#endif
...
Detect element content changes with jQuery
...
These are mutation events.
I have not used mutation event APIs in jQuery, but a cursory search led me to this project on GitHub. I am unaware of the project's maturity.
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Why dict.get(key) instead of dict[key]?
...
I will give a practical example in scraping web data using python, a lot of the times you will get keys with no values, in those cases you will get errors if you use dictionary['key'], whereas dictionary.get('key', 'return_otherwise') has no problems.
Similarly,...
nodejs get file name from absolute path?
If there any API could retrieve file name from an absolute file path?
7 Answers
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