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常用Linux命令详解（持续更新） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...项可以方便的查阅正在改变的日志文件，tail -f filename会把filename里最尾部的内容显示在屏幕上，并且不断刷新，使你看到最新的文件内容。
四、打包、压缩、解包操作
1. 将单个或多个文件、目录进行打包或解压包的tar命令
...
Cosine Similarity between 2 Number Lists
...
I don't suppose performance matters much here, but I can't resist. The zip() function completely recopies both vectors (more of a matrix transpose, actually) just to get the data in "Pythonic" order. It would be interesting to time the nuts-and-bolts implementation:
import math
def cosine_simi...
iOS开发过程中的各种tips - 更多技术 - 清泛网 - 专注C/C++及内核技术
...h *)indexPath {
NSInteger row = indexPath.row;
return row;
}
6.把plist文件中的数据赋给数组
NSString *path = [[NSBundle mainBundle] pathForResource:@"States" ofType:@"plist"];
NSArray *array = [NSArray arrayWithContentsOfFile:path];
7.获取触摸的点
- (CGPoint)locat...
What is a stream?
...o other streams and then the box performs some transformation on the data (zipping it, or changing UNIX linefeeds to DOS ones, or whatever). Pipes are another thorough test of the metaphor: that's where you create a pair of streams such that anything you write into one can be read out of the other. ...
How can I create an executable JAR with dependencies using Maven?
...;property name="tar.destfile" value="${final.name}.tar"/>
<zip basedir="${project.build.directory}" destfile="${final.name}.zip" includes="${archive.includes}" />
<tar basedir="${project.build.directory}" destfile="${tar.destfile}" includes="${archive.includes}" />...
Where is Python's sys.path initialized from?
...h, unless you're
on Windows and applocal is set to true in pyvenv.cfg.
The zip file path, which is <prefix>/lib/python35.zip on Linux/Mac and
os.path.join(os.dirname(sys.executable), "python.zip") on Windows, is added to sys.path.
If on Windows and no applocal = true was set in pyvenv.cfg, the...
How to decompile a whole Jar file? [closed]
...hat all Java archive files (.jar/.war/etc...) are all basically just fancy.zip files, with a few added manifests and metadata.
Second, to tackle this problem I personally use several tools which handle this problem on all levels:
Jad + Jadclipse while working in IDE for decompiling .class files
W...
What are the main performance differences between varchar and nvarchar SQL Server data types?
...y Collation such as Latin1_General_100_BIN2.
If storing postal codes (i.e. zip codes), use VARCHAR since it is an international standard to never use any letter outside of A-Z. And yes, still use VARCHAR even if only storing US zip codes and not INT since zip codes are not numbers, they are strings,...
Generate a heatmap in MatPlotLib using a scatter data set
...dn(1000)
y = np.random.randn(1000)
sigmas = [0, 16, 32, 64]
for ax, s in zip(axs.flatten(), sigmas):
if s == 0:
ax.plot(x, y, 'k.', markersize=5)
ax.set_title("Scatter plot")
else:
img, extent = myplot(x, y, s)
ax.imshow(img, extent=extent, origin='lower', c...
Is it possible to use pip to install a package from a private GitHub repository?
...
GitHub don't (currently, as of August 2016) offer an easy way to get the zip / tarball of private repositories. So you need to point setuptools to tell setuptools that you're pointing to a Git repository:
from setuptools import setup
import os
# Get the deploy key from https://help.github.com/art...