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vertical & horizontal lines in matplotlib
... the axis.
Instead, use plt.plot((x1, x2), (y1, y2), 'k-') to draw a line from the point (x1, y1) to the point (x2, y2) in color k. See pyplot.plot.
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How do I use Ruby for shell scripting?
...ch/of/strings'
__FILE__ #=> the name of the current file
Also useful from the stdlib is FileUtils
require 'fileutils' #I know, no underscore is not ruby-like
include FileUtils
# Gives you access (without prepending by 'FileUtils.') to
cd(dir, options)
cd(dir, options) {|dir| .... }
pwd()
mkdi...
How do I make calls to a REST api using C#?
...d.
I thought I'd post an updated answer since most of these responses are from early 2012, and this thread is one of the top results when doing a Google search for "call restful service c#".
Current guidance from Microsoft is to use the Microsoft ASP.NET Web API Client Libraries to consume a RESTf...
Bash empty array expansion with `set -u`
... I don't see you testing "${arr[@]}". Am I missing something? From what I can see it works at least in 5.x.
– x-yuri
May 9 at 17:49
1
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Git number of commits per author on all branches
...tatistics for all branches.
EDIT: Added --no-merges to exclude statistics from merge commits.
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Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...s after the Ruby initialize. Hence it is run every time a record is loaded from the database and used to create a new model object in memory, so don't use this callback if what you want is just to set default values the first time you add a new record. If you want to do that, use before_create and n...
FirstOrDefault: Default value other than null
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From the documentation for FirstOrDefault
[Returns] default(TSource) if source is empty;
From the documentation for default(T):
the default keyword, which will return null for reference types and zero for numeric va...
记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...ipe
接着使用strace跟踪了一下PHP脚本，发现进程卡在了recvfrom操作上：
shell> strace -f -r -p <PID>
recvfrom(<FD>,
通过如下命令查询recvfrom操作的含义：
shell> apropos recvfrom
receive a message from a socket
或者按照下面的方式确认一下：
s...
Under what circumstances are linked lists useful?
...tting an element in a known position:
on lists you have to walk the list from the first element to the element in the specific position. Worst case: O(n)
on arrays you can access the element immediately. O(1)
This is a very low-level comparison of these two popular and basic data structures and...
Archives not showing up in Organizer for Xcode 4
...me a few days to finally figure this out as I placed my XCode source files from a Windows shared folder, but the Archives folder is on the local Mac, which caused archives not picked up by Organizer.
Thanks to @Smikey & @Ralph B & @Scott McMillin
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