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“Cloning” row or column vectors
Sometimes it is useful to "clone" a row or column vector to a matrix. By cloning I mean converting a row vector such as
9 A...
How is set() implemented?
...Isn't big O the worst case scenario? If you can find an instance where the time is O(n) then it is O(n).. I don't understand anything right now from all those tutorials.
– Claudiu Creanga
Sep 21 '16 at 21:13
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Why aren't variables declared in “try” in scope in “catch” or “finally”?
... finallys must execute, being safe and declaring this a problem at compile time is far better than at runtime.
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How to use Git and Dropbox together effectively?
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I think that Git on Dropbox is great. I use it all the time. I have multiple computers (two at home and one at work) on which I use Dropbox as a central bare repository. Since I don’t want to host it on a public service, and I don’t have access to a server that I can always S...
How can I get stock quotes using Google Finance API?
...ainst Google's terms of service.
Check google-finance-get-stock-quote-realtime for the complete code in python
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How do you print in a Go test using the “testing” package?
...Parallel()
for i := 0; i < 15; i++ {
t.Logf("%d", i)
time.Sleep(3 * time.Second)
}
}
func TestBar(t *testing.T) {
t.Parallel()
for i := 0; i < 15; i++ {
t.Logf("%d", i)
time.Sleep(2 * time.Second)
}
}
func TestBaz(t *testing.T) {
t.Parall...
What is the difference between concurrency, parallelism and asynchronous methods?
...ay that parallel tasks should be truly multitasking, executed "at the same time" whereas concurrent could mean that the tasks are sharing the execution thread while still appearing to be executing in parallel.
Asynchronous methods aren't directly related to the previous two concepts, asynchrony is ...
How to find all combinations of coins when given some dollar value
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I looked into this once a long time ago, and you can read my little write-up on it. Here’s the Mathematica source.
By using generating functions, you can get a closed-form constant-time solution to the problem. Graham, Knuth, and Patashnik’s Concrete ...
tcp端口状态ESTABLISHED、TIME_WAIT、CLOSE_WAIT 、SYN_RECV等详解 - C/C++...
tcp端口状态ESTABLISHED、TIME_WAIT、CLOSE_WAIT 、SYN_RECV等详解TCP状态转移要点TCP协议规定，对于已经建立的连接，网络双方要进行四次握手才能成功断开连接，如果缺少了其中某个步骤，将会使连接处于假死 TCP状态转移要点
TCP协议...
Extract substring using regexp in plain bash
I'm trying to extract the time from a string using bash, and I'm having a hard time figuring it out.
4 Answers
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