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What MySQL data type should be used for Latitude/Longitude with 8 decimal places?
.... I was test it with 300K rows, query response time is good. ( 2 x 2.67GHz CPU, 2 GB RAM, MySQL 5.5.49 )
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Most efficient way to make the first character of a String lower case?
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Depends what resource you are making more efficient - CPU or programmer time :)
– Dan Gravell
Mar 20 '17 at 16:33
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Resetting generator object in Python
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The downside of option 1 is that it computes the values again. If that's CPU-intensive you end up calculating twice. On the other hand, the downside of 2 is the storage. The entire list of values will be stored on memory. If there are too many values, that can be unpractical.
So you have the clas...
ng-app vs. data-ng-app, what is the difference?
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It seems like such a waste of CPU cycles to manually strip off data- and x-. Why can't the HTML validation rules be changed to accept ng- stuff?
– DaveAlger
May 13 '15 at 14:43
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2016年最适合小投资的10个创业项目 - 资讯 - 清泛网 - 专注C/C++及内核技术
...成本1-2元，收50-80元，日收活在50件以上，加上各种疑难问题衣服处理，扣除工商、税务、水电、房租等费用，年利可达8万元以上。
项目二、宠物产业
花3-5万元开家庞物用品店，投入少、利润高，不需要过多专业技术，最为切...
How to use clock() in C++
...sure how long your program works. The following functions help measure the CPU time since the start of the program:
C++ (double)clock() / CLOCKS PER SEC with ctime included.
python time.clock() returns floating-point value in seconds.
Java System.nanoTime() returns long value in nanoseconds.
my ...
Receiver not registered exception error?
... an exception throwing invalid handler in place because it would cost some CPU cycles to remove it?
– Curmudgeonlybumbly
May 1 '16 at 16:22
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Is there a point to minifying PHP?
...r than what regular PHP allows. The key here is static typing. On a modern CPU, a dynamic language eats branch misprediction penalty left and right. Fact that PHP arrays are hash tables also imposes high cost: lot of branch mispredictions, inefficient use of cache, poor memory prefetching, and no SI...
Is there a good Valgrind substitute for Windows?
... It's not a valgrind replacement (what is really) but it has a new malloc, cpu profiler, heap profiler and checker. Worth a look as it's support on Linux and Windows (inc Mingw) and other unices.
– alexr
Feb 13 '12 at 17:29
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Clearing a string buffer/builder after loop
...point of view is not always true. Adding just one line to potentially gain CPU cycles and memory is absolutely not evil. You are taking the idea too straight. Note that a loop is usually repeated many times. A loop can be repeated thousands of times, which can eat precious megabytes on a mobile (and...