wrapper

I like to use a progress bar while running slow for loops. This could be done easily with several helpers, but I do like the tkProgressBar from tcltk package. A small example: pb <- tkProgressBar(title = "Working hard:", min = 0, max = length(urls), width = 300) for (i in 1:300) { # DO SOMETHING Sys.sleep(0.5) setTkProgressBar(pb, i, label=paste( round(i/length(urls)*100, 0), "% ready!")) } close(pb) And I would like to set up a small function to store in my .Rprofile named to forp (as: for loop with progressbar), to call just like for but with auto added progress bar - but unfortunately have

Suppose I want to include some calls to console.log for some legitimate production reason, say for something like a unit test harness. Obviously I would not want this to throw a premature exception if the browser doesn't have a console , or if no console is present . What's the best way to create a simple log function to log stuff to the console, or silently fail without error if no console is present? The accepted answer to the question linked above: var log = Function.prototype.bind.call(console.log, console); log.apply(console, ["this", "is", "a", "test"]); Can this log function be called

I'd interacting with a lot of deeply nested json I didn't write, and would like to make my python script more 'forgiving' to invalid input. I find myself writing involved try-except blocks, and would rather just wrap the dubious function up. I understand it's a bad policy to swallow exceptions, but I'd rather prefer they to be printed and analysed later, than to actually stop execution. It's more valuable, in my use-case to continue executing over the loop than to get all keys. Here's what I'm doing now: try: item['a'] = myobject.get('key').METHOD_THAT_DOESNT_EXIST() except: item['a'] = '' try

In software portability context, what is the difference between this three concepts? So for example, I want to use the ncurses library, the original ncurses library is written in C, but my application is being written in C++, then I found "ncurses wrapper", "bindings to ncurses", and "ncurses port". Which one should I use? What are the pros and cons of each one? A wrapper is a bit of code that sits on top of other code to recycle it's functionality but with a different interface. This usually implies an interface written in the same language. It should also be noted that sometimes people will

I'm learning to use HikariCP (i'm new in java) and i found a wrapper but i think it's not thread safety, well the instance of the singleton is thread safety but not the method getConnection(). The class is this: public class HikariCPWrapper{ private static final HikariCPWrapper INSTANCE; private HikariDataSource ds; static { INSTANCE = new HikariCPWrapper(); } private HikariCPWrapper(){ HikariConfig config = new HikariConfig(); //config.set... //... ds = new HikariDataSource(config); } public static HikariCPWrapper getInstance () { return INSTANCE; } public Connection getConnection() throws

I am currently porting some code from Matlab to Octave. Some of the functions of the Matlab code use the Piotr's Computer Vision Matlab Toolbox ( here ) that includes some mex files. In Matlab, everything is working like a charm but when I run my codes with Octave, it throws this error: error: 'imResampleMex' undefined near line 50 column 5 However all the internal paths within the toolbox should be good. I figured out that the way Matlab and Octave handle mex files is different and tried to build one of the mex files from the C++ function within Octave like this: mkoctfile --mex imResampleMex

I'm currently working on a C# wrapper to work with Dallmeier Common API light. See previous posting: C# wrapper and Callbacks I've got pretty much everything 'wrapped' but I'm stuck on wrapping a callback which contains an array of three pointers & an array integers: dlm_setYUVDataCllback int(int SessionHandle, void (*callback) (long IPlayerID, unsigned char** yuvData, int* pitch, int width, int height, int64_t ts, char* extData)) Function Set callback, to receive current YUV image. Arguments SessionHandle: handle to current session. Return PlayerID (see callback). Callback - IPlayerId: id to