大约有 43,000 项符合查询结果（耗时：0.0571秒） [XML]
What does the restrict keyword mean in C++?
... *b
add R2 += R1
set R2 → *b
Does GCC really do it?
g++ 4.8 Linux x86-64:
g++ -g -std=gnu++98 -O0 -c main.cpp
objdump -S main.o
With -O0, they are the same.
With -O3:
void f(int *a, int *b, int *x) {
*a += *x;
0: 8b 02 mov (%rdx),%eax
2: 01 07 ...
Reading a file line by line in Go
...s
}
return s[:length]
}
I tested on:
go version go1.15 darwin/amd64
go version go1.7 windows/amd64
go version go1.6.3 linux/amd64
go version go1.7.4 darwin/amd64
The test program outputs:
Long lines
readFileWithReadString
> Read 4194305 characters
> > aaaaaaaaaaaaaaaaaaaaaaaaa...
Getting time elapsed in Objective-C
... a link with much more information here: https://stackoverflow.com/a/23378064/588476
In light of that information, maybe it is safer to use Apple's function CACurrentMediaTime!
I also benchmarked the mach_timebase_info call and it takes approximately 19ns on my iPhone 6, so I removed the (not thre...
Usage of __slots__?
...991611
>>> min(timeit.repeat(get_set_delete_fn(not_slotted)))
0.3664822799983085
The slotted access is almost 30% faster in Python 3.5 on Ubuntu.
>>> 0.3664822799983085 / 0.2846834529991611
1.2873325658284342
In Python 2 on Windows I have measured it about 15% faster.
Why use __s...
How can I change Mac OS's default Java VM returned from /usr/libexec/java_home
...c/java_home -verbose
Matching Java Virtual Machines (3):
1.7.0_45, x86_64: "Java SE 7" /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home
1.7.0_09, x86_64: "Java SE 7" /Library/Java/JavaVirtualMachines/jdk1.7.0_09.jdk/Contents/Home
!1.8.0, x86_64: "Java SE 8" /Library/Ja...
How to install Java 8 on Mac
...k install java on my El Capitan Mac and it's downloading jdk-8u112-macosx-x64.dmg.
– Calrion
Oct 24 '16 at 0:43
...
IOS7 : UIScrollView offset in UINavigationController
...much for this post!!!!!!! Apple and apple?
– user779764
Feb 16 '14 at 1:11
I found that this caused my UIScrollView's ...
Gradle finds wrong JAVA_HOME even though it's correctly set
...st a symlink
/etc/alternatives/javac -> /usr/lib/jvm/java-8-openjdk-amd64/bin/javac
OK so finally found the bin above actual javac so do this
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export PATH=$JAVA_HOME/bin:$PATH
above can be simplified and generalized to
which javac >/dev/...
How to request Administrator access inside a batch file
...This script is now slightly edited to support command line arguments and a 64 bit OS.
Thank you Eneerge @ https://sites.google.com/site/eneerge/scripts/batchgotadmin
@echo off
:: BatchGotAdmin
:-------------------------------------
REM --> Check for permissions
IF "%PROCESSOR_ARCHITECTURE...
Config Error: This configuration section cannot be used at this path
... loaded up fine in my browser.
Warning:
Editing applicationHost.config on 64-bit Windows
share
|
improve this answer
|
follow
|
...