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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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What's the difference between `1L` and `1`?
... large vectors, that's less wasted memory and less to wade through for the CPU (so it's typically faster).
Mostly this applies when working with indices.
Here's an example where adding 1 to an integer vector turns it into a double vector:
x <- 1:100
typeof(x) # integer
y <- x+1
typeof(y) # ...
String.Replace ignoring case
...nsensitive way to replace all values.
Advantages of this method:
High CPU and MEMORY efficiency;
It is the fastest solution, 2.5 times faster than other's methods
with regular expressions (proof in the end);
Suitable for removing parts from the input string (set newValue to
null), optimized for...
Android Studio vs Eclipse + ADT Plugin? [closed]
... I installed the last version of Android Studio, it consumes the CPU and RAM much much more than eclipse ((I have i7 laptop with 10G RAM )), in addition some works become hard work, I was able to build "hello world in 2 minutes in eclipse, but not be able to do so in android studio, even s...
When to use enumerateObjectsUsingBlock vs. for
...ly faster, but that doesn't matter much in most cases — few programs are CPU-bound, and even then it's rare that the loop itself rather than the computation inside will be a bottleneck.
A simple loop also reads more clearly. Here's the boilerplate of the two versions:
for (id x in y){
}
[y enum...
iPhone Data Usage Tracking/Monitoring
... mach_absolute_time is not uptime. It is roughly the amount of time the CPU has been active. mach_absolute_time mostly stops counting when the device sleeps.
– Bob Whiteman
Oct 26 '15 at 20:26
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【软著】软件著作权证书申请流程及注意事项，模板分享 - App Inventor 2 中...
...明专利来说，简单很多。只要你提供的材料及文档格式没问题，那就大概率能过。必须按照模板来写，参考模板见附件（源码模板带行号，自动就是每页50行），再配合下文的注意事项。
4、是否收费？一般来说，找第三方的...
Is there a library function for Root mean square error (RMSE) in python?
...i-gigabyte sized libraries; requiring 3 to 20 minute Network download then CPU full-tilt installs, when all you really need is about 3 lines of code that fits in 400 bytes. If you ask for a library for a job that can be compressed into a 1 line of code, that's about 90 characters wide, then you're ...
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...
What Computer Science concepts should I know? [closed]
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Systems programming
Understands the entire programming stack, hardware (CPU + Memory + Cache + Interrupts + microcode), binary code, assembly, static and dynamic linking, compilation, interpretation, JIT compilation, garbage collection, heap, stack, memory addressing…
Source Code Version Contr...