timing

I am interested in timing the execution time of a free function or a member function (template or not). Call TheFunc the function in question, its call being TheFunc(/*parameters*/); or ReturnType ret = TheFunc(/*parameters*/); Of course I could wrap these function calls as follows : double duration = 0.0 ; std::clock_t start = std::clock(); TheFunc(/*parameters*/); duration = static_cast<double>(std::clock() - start) / static_cast<double>(CLOCKS_PER_SEC); or double duration = 0.0 ; std::clock_t start = std::clock(); ReturnType ret = TheFunc(/*parameters*/); duration = static_cast<double>(std:

I'm looking to fade in divs with a certain class in code order, with each fade coming maybe 250ms after the last, giving the impression of a gradual page load. I'm this far for fading in everything at once... $(window).load(function(){ $('div.fade_this_please').fadeIn(4000); }); but I'm not sure where I'm going to cycle through each DIV and fade it in when the other is complete. Can someone point me in the right direction!? Any advice appreciated! This fades all divs into view, each with a progessing 250ms delay. I'd recommend reducing the fade time to 2 seconds for each at max, 4 seconds

I'm trying to find a way to get the execution time of a section of code in C. I've already tried both time() and clock() from time.h, but it seems that time() returns seconds and clock() seems to give me milliseconds (or centiseconds?) I would like something more precise though. Is there a way I can grab the time with at least microsecond precision? This only needs to be able to compile on Linux. You referred to clock() and time() - were you looking for gettimeofday() ? That will fill in a struct timeval , which contains seconds and microseconds. Of course the actual resolution is up to the

Let's say I have a function: myFunc = function(number) { console.log("Booyah! "+number); } And I want it to run on a set interval. Sounds like I should use setInterval , huh! But what if I want to run multiple intervals of the same function, all starting at the exact same time? setInterval(function(){ myFunc(1); }, 500); setInterval(function(){ myFunc(2); }, 1000); setInterval(function(){ myFunc(3); }, 2000); So that the first runs exactly twice in the time it takes the second to run once, and the same between the second and third. How do you make sure that they all start at the same time so

How can we easily time function calls in Elixir? Is there any hidden switch in IEx to enable this? You can write a module 1 that can measure a given function. The following function returns the runtime of a given function in seconds: defmodule Benchmark do def measure(function) do function |> :timer.tc |> elem(0) |> Kernel./(1_000_000) end end Use it like this: iex> Benchmark.measure(fn -> 123456*654321 end) 9.0e-6 If you want to use that for Benchmarking, then there is another answer. A better approach than measuring single run execution time is to measure operations per timeframe. This takes

I'm looking to monitor the end user experience of our website and link that with timing information already logged on the server side. My assumption is that this will require javascript to to capture time stamps at the start of request (window.onbeforeunload) and at the end of loading (window.onload). Basically this - " Measuring Web application response time: Meet the client " Is there a better approach? What kind of performance penalty should I be expecting (order of magnitude)? How good are the results? EDIT (2013): try Boomerang instead, like @yasei-no-umi suggests. It's actively

For timing an algorithm (approximately in ms), which of these two approaches is better: clock_t start = clock(); algorithm(); clock_t end = clock(); double time = (double) (end-start) / CLOCKS_PER_SEC * 1000.0; Or, time_t start = time(0); algorithm(); time_t end = time(0); double time = difftime(end, start) * 1000.0; Also, from some discussion in the C++ channel at Freenode, I know clock has a very bad resolution, so the timing will be zero for a (relatively) fast algorithm. But, which has better resolution time() or clock()? Or is it the same? It depends what you want: time measures the real

I'd like to know how long my project's builds take, for example by displaying it in the build pane. Is this option available somewhere in Xcode? Thanks. Guillaume Type this in the terminal: defaults write com.apple.dt.Xcode ShowBuildOperationDuration YES Duration appears in the activity viewer after a build, alongside the "Succeeded" message. If you are running the app, the status will be replaced by the running status before you can see the duration. This replaces the entry that was used in older versions of Xcode: defaults write com.apple.Xcode ShowBuildOperationDuration YES Xcode may need