Is $(document).ready necessary if I put all my JavaScript at the bottom of the page? [duplicate]

This SO answer says NO: stackoveflow question $(document).ready is for assurance full DOM is available at the time the function is called. Any functions and events not depending on the DOM don’t need to be put into the ready event. Also – to improve page rendering speed – load javascript files dynamically in non-blocking fashion: … Read more

Shader optimization: Is a ternary operator equivalent to branching?

Actually this depends on the shader language one uses. In HLSL and Cg a ternary operator will never lead to branching. Instead both possible results are always evaluated and the not used one is being discarded. To quote the HLSL documentation: Unlike short-circuit evaluation of &&, ||, and ?: in C, HLSL expressions never short-circuit … Read more

Delphi: How to organize source code to increase compiler performance?

Some things that could slow down the compiler Redundant units in your uses clause. See this question for a link to CnPack. Not explicitly adding units to your project file. You’ve already seem to have covered that. Changed compiler settings, most notably include TDD32 info. Try to get rid of unused units in your uses … Read more

Scikit Learn GridSearchCV without cross validation (unsupervised learning)

After much searching, I was able to find this thread. It appears that you can get rid of cross validation in GridSearchCV if you use: cv=[(slice(None), slice(None))] I have tested this against my own coded version of grid search without cross validation and I get the same results from both methods. I am posting this … Read more

Why isn’t pass struct by reference a common optimization?

Don’t forget that in C/C++ the compiler needs to be able to compile a call to a function based only on the function declaration. Given that callers might be using only that information, there’s no way for a compiler to compile the function to take advantage of the optimization you’re talking about. The caller can’t … Read more

Speeding up pairing of strings into objects in Python

When dealing with the creating of large numbers of objects, often the single biggest performance enhancement you can use is to turn the garbage collector off. Every “generation” of objects, the garbage collector traverses all the live objects in memory, looking for objects that are a part of cycles but are not pointed at by … Read more

Speedup C++ code

First, make sure dist2 can be inlined (it’s not clear from your post whether or not this is the case), having it defined in a header file if necessary (generally you’ll need to do this – but if your compiler generates code at link time, then that’s not necessarily the case). Assuming x86 architecture, be … Read more