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See what process is using a file in Mac OS X
...ble to track a file and see which process is touching that file. Is that possible? I know that I can see the list of open processes in activity monitor but I think it's happening to quickly for me to see it. The reason for this is I'm using a framework and I think the system version of the framew...
Allowed characters in filename [closed]
...bout each file system, including reserved file names such as CON under MS-DOS. I mention that only because I was bitten by that once when I shortened an include file from const.h to con.h and spent half an hour figuring out why the compiler hung.
Turns out DOS ignored extensions for devices so that...
How can I convert a stack trace to a string?
... trace to String. This class is available in Apache commons-lang which is most common dependent library with many popular open sources
org.apache.commons.lang.exception.ExceptionUtils.getStackTrace(Throwable)
share
...
Teachable Machine 图像分类扩展 · App Inventor 2 中文网
... 中使用本扩展加载模型并进行实时分类。
扩展需要配合一个 WebViewer（网页浏览框）组件使用，用于加载模型和显示摄像头画面。支持视频模式（实时摄像头画面分类）和图片模式（对已有图片分类）两种输入模式。
下载：
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Better to 'try' something and catch the exception or test if it's possible first to avoid an excepti
... if index in mylist tests wether index is an element of mylist, not a possible index. You would want if index < len(mylist) instead.
– ychaouche
Jun 24 '13 at 16:40
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How to import classes defined in __init__.py
...ject
Helper in lib.foo.someobject
# ./import_submodule.py
import fnmatch, os
from lib.settings import Values
from lib import Helper
print
for root, dirs, files in os.walk('.'):
for f in fnmatch.filter(files, '*.py'):
print "# %s/%s" % (os.path.basename(root), f)
print open(os.p...
socket.shutdown vs socket.close
...r required,
the calling program can discard the
socket by applying a close subroutine
to the socket descriptor. If a
reliable delivery socket has data
associated with it when a close takes
place, the system continues to attempt
data transfer. However, if the data is
still undelivered...
程序员之网络安全系列（三）：数据加密之对称加密算法 - 更多技术 - 清泛网...
...手段还原（解密）。 加密包括两个元素：算法和密钥。一个加密算法是将普通的文本（或者可以理解的信息）与一窜数字（密钥）的结合，产生不可理解的密文的步骤，密钥是用来对数据进行编码和解码的一种算法。
举个例子...
How to insert a newline in front of a pattern?
...
This works in bash and zsh, tested on Linux and OS X:
sed 's/regexp/\'$'\n/g'
In general, for $ followed by a string literal in single quotes bash performs C-style backslash substitution, e.g. $'\t' is translated to a literal tab. Plus, sed wants your newline literal to...
What is the difference between a thread and a fiber?
...
In the most simple terms, threads are generally considered to be preemptive (although this may not always be true, depending on the operating system) while fibers are considered to be light-weight, cooperative threads. Both are separ...