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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
...a look at this excellent answer: https://stackoverflow.com/a/11227902/1001643
Compilers typically don't have enough information to know which branches will alias and whether those aliases will be significant. However, that information can be determined at runtime with tools such as Cachegrind and...
Traverse all the Nodes of a JSON Object Tree with JavaScript
... anyway. It could just as well have been null.
– Thor84no
May 13 '15 at 14:14
1
For jshint in str...
How to include package data with setuptools/distribute?
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296
I realize that this is an old question, but for people finding their way here via Google: pack...
How to find the type of an object in Go?
...ntln(reflect.TypeOf(tst3))
}
Output:
Hello, playground
string
int
float64
see: http://play.golang.org/p/XQMcUVsOja to view it in action.
More documentation here: http://golang.org/pkg/reflect/#Type
share
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How is the default max Java heap size determined?
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In my case on Linux, InitialHeapSize = 262803264 and MaxHeapSize = 4206886912 which is about 256 MB and 4 GB if I'm not mistaken. Does this mean that every JVM starts as if it was launched with -Xms256m -Xmx4g options?
– Yuriy Nakonechnyy
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How can I put strings in an array, split by new line?
... use preg_split("/\\r\\n|\\r|\\n/", $value).
– kjdion84
Sep 18 '17 at 15:24
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show 2 more comments
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How to inspect FormData?
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84
Short answer
console.log(...fd)
Longer answer
If you would like to inspect what the raw bod...
Xcode 6 iPhone Simulator Application Support location
...in Xcode Beta 3: ~/Library/Developer/CoreSimulator/Devices/B2C6629C-998D-4E84-9ADB-06CAF5BA4B89/data/Containers/Data/Application/62593001-FADA-4647-AA80-FE9973956C05/Documents/
– harryhorn
Jul 10 '14 at 11:04
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Floating point vs integer calculations on modern hardware
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@JohannesSchaub-litb: SSE2 (baseline for x86-64) has packed double-precision FP. With only two 64-bit doubles per register, the potential speedup is smaller than float for code that vectorizes well. Scalar float and double use XMM registers on x86-64, with legacy x87 ...
adito-gateway -华为云免费SSL VPN解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...误提示、
[root@adito mnt]# ls
adito-0.9.1-bin.zip jdk-7u17-linux-x64.tar.gz
[root@adito mnt]# tar -zxvf jdk-7u17-linux-x64.tar.gz
解压出来后，移动到usr目录
[root@adito mnt]# mv jdk1.7.0_17 /usr
配置java 参数
alternatives --install /usr/bin/java java /usr/jdk1.7.0_17/jr...