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What is the most ridiculous pessimization you've seen? [closed]
...bing 16 bits from RAM was quicker than grabbing 32 bits.
I had to write a demo program to show that grabbing 32-bit values on a 32-bit system was faster than grabbing 16-bit values, and explain that to grab a 16-bit value the CPU had to make a 32-bit wide memory access and then mask out or shift th...
Choice between vector::resize() and vector::reserve()
...ut <<(v2.capacity()==1000)<< endl; //prints 1
Output (online demo):
1
1
0
1
So resize() may not be desirable, if you don't want the default-created objects. It will be slow as well. Besides, if you push_back() new elements to it, the size() of the vector will further increase by all...
Interface Builder: What are the UIView's Layout iOS 6/7 Deltas for?
...low shows this change visually. It's quite an extreme example, but it's to demonstrate its ability. I would only expect in practice to have delta changes of only a few pixels.
You may notice that the values are the inverse for the iOS 6 view; this is because the deltas are relative to the type ...
CSS: bolding some text without changing its container's size
...over { text-shadow: -0.06ex 0 black, 0.06ex 0 black; }
}
There is a live demo with a slider to play with various grades on the Mozilla Variable Fonts Guide. Google's Introduction to variable fonts on the web has an animated GIF demonstrating a toggle between a high grade and no grade:
...
Why is Thread.Sleep so harmful
...ndles
The most-made-mistake is using Thread.Sleep with a while-construct (demo and answer, nice blog-entry)
EDIT:
I would like to enhance my answer:
We have 2 different use-cases:
We are waiting because we know a
specific timespan when we should continue (use Thread.Sleep, System.Th...
How to get existing fragments when using FragmentPagerAdapter
...ter just as same as it is provided by the Android sample project Support4Demos .
13 Answers
...
memory_get_peak_usage() with “real usage”
...d by emalloc() while memory_get_usage(true) returns milestone which can be demonstration here Memory Mile Store
I want to know how close was the script to hit that limit.
That would take some maths and might only work in loops or specific use cases. Why did i say such ?
Imagine
ini_set('memory...
With CSS, use “…” for overflowed block of multi-lines
...ion, and someone was able to come up with a nice jQuery solution. You can demo the solution here: http://jsfiddle.net/MPkSF/
If javascript is not an option, I think you may be out of luck...
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MFC Grid control 2.27 - C/C++ - 清泛网 - 专注IT技能提升
...做出各种定制界面的表格。
Download Grid Control Source and Demo - 311.9 KB
Preface
This grid is the work of thousands of hours of squinting at pixels, hunting memory leaks, adding new features, fixing new bugs and beating the code by force of will into a form that is as feature...
MFC Grid control 2.27 - C/C++ - 清泛网 - 专注IT技能提升
...做出各种定制界面的表格。
Download Grid Control Source and Demo - 311.9 KB
Preface
This grid is the work of thousands of hours of squinting at pixels, hunting memory leaks, adding new features, fixing new bugs and beating the code by force of will into a form that is as feature...