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Anonymous recursive PHP functions
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Mind Blown! Thanks a lot! How did I not know about this till now? The amount of application I have for recursive anonymous functions is huge. Now I can finally loop through nested structures in layouts without having to explicitly define a method and keep all my lay...
What is the maximum value for an int32?
... When you are programming: yes in 99% of cases. But you may want to know that it's something like ~ 2 billion to planning programming approaches or when working with data, although it's a very large number. :)
– Andre Figueiredo
Nov 17 '13 at 21:53
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Difference between std::result_of and decltype
...f a deduction failure. That has been corrected in C++14: std::result_of is now required to be SFINAE-friendly (thanks to this paper).
So on a conforming C++14 compiler, std::result_of_t<F(Args...)> is strictly superior. It's clearer, shorter, and correctly† supports more Fs‡ .
†Unless...
Disable cache for some images
...to prevent caching was:
Cache-Control = 'no-store'
For completeness i'm now using all 3 of 'no-cache, no-store, must-revalidate'
So in my case (serving dynamically generated images out of Flask in Python), I had to do the following to hopefully work in as many browsers as possible...
def make_u...
What are bitwise shift (bit-shift) operators and how do they work?
..., you would use the following math:
memoryOffset = (row * 320) + column
Now, back in that day and age, speed was critical, so we would use bitshifts to do this operation.
However, 320 is not a power of two, so to get around this we have to find out what is a power of two that added together make...
Removing transforms in SVG files
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This extension has been updated and now it works for rects too, at least in my testing.
– sil
Dec 10 '19 at 22:51
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How to elegantly deal with timezones
... times on the server are UTC.
That means using, like you said, DateTime.UtcNow.
Try to trust the client passing dates to the server as little as possible. For example, if you need "now", don't create a date on the client and then pass it to the server. Either create a date in your GET and pass it t...
Programmatically scroll a UIScrollView
... flick. Basically my code works in a way similar to the iPhone photo app. Now, is there a way that I can programmatically do the same thing so that I end up with a slideshow that runs on its own with a click of a button and a configurable pause between each scroll?
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cpuid汇编指令 - C/C++ - 清泛网 - 专注C/C++及内核技术
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jne wrong_processor
cmp ecx, 'letn'
jne wrong_processor
// now we have an Intel-Processor:
// get CPU feature flag..
mov eax,1
cpuid
mov wCPU_SerialNo_64_93,eax //处理器序列号一共96位，最高32位就是处理器签名
and edx,PSN_FLAG ...
Hidden Features of C#? [closed]
... makeHandler(1, 0);
Note the chaining: (dx, dy) => (sender, e) =>
Now that's why I'm happy to have taken the functional programming class :-)
Other than the pointers in C, I think it's the other fundamental thing you should learn :-)
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