The accepted answer is not right because any decent engine should be able to hoist the property load out of the loop with so simple loop bodies. See this jsperf – at least in V8 it is interesting to see how actually storing it in a variable changes the register allocation – in the code …
JavaScript (in browsers) doesn’t run concurrently2. At most one of the setTimeout callbacks can execute at a time – as there is one JavaScript execution context or “thread”. However, the “next scheduled timeout” to run is always run .. next. The “4” runs before the “2” callback because it was scheduled to run sooner. The …
As @Sami Laine said in his comment, the Linux perf tool is dependent on Linux specific code. It relies on the perf_event_open system call which is not standardized. Note: Maybe you could search how MacOSX users are using recent hardware performance counters.
You can find them in /var/log within your root Magento installation There will usually be two files by default, exception.log and system.log. If the directories or files don’t exist, create them and give them the correct permissions, then enable logging within Magento by going to System > Configuration > Developer > Log Settings > Enabled …
I was getting this error having the same package installed both in “dependencies” and “devDependencies” with different versions.
Most operating systems don’t support asynchronous file operations. That’s why asyncio doesn’t support them either. See the asyncio wiki for further explanation.
You’ll get that error once your numbers are greater than sys.maxsize: >>> p = [sys.maxsize] >>> preds[0] = p >>> p = [sys.maxsize+1] >>> preds[0] = p Traceback (most recent call last): File “<stdin>”, line 1, in <module> OverflowError: Python int too large to convert to C long You can confirm this by checking: >>> …
git checkout HEAD~1 This will move your current HEAD to one revision earlier. git checkout <sha> This will move your current HEAD to the given revision. Use git log or gitk to find the revision you’re looking for.
Your suggestion (calling the shared_ptr<T> constructor with no argument) is correct. (Calling the constructor with the value 0 is equivalent.) I don’t think that this would be any slower than calling vec.push_back() with a pre-existing shared_ptr<T>, since construction is required in both cases (either direct construction or copy-construction). But if you want “nicer” syntax, you …
This would work in IE, Firefox and Chrome (can somebody test the others please? — Thanks, @Bryan): for (var i = 0; i < elem.attributes.length; i++) { var attrib = elem.attributes[i]; console.log(attrib.name + ” = ” + attrib.value); } EDIT: IE iterates all attributes the DOM object in question supports, no matter whether they have …