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Why are C character literals ints instead of chars?
In C++, sizeof('a') == sizeof(char) == 1 . This makes intuitive sense, since 'a' is a character literal, and sizeof(char) == 1 as defined by the standard.
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Test if remote TCP port is open from a shell script
...inted by B. Rhodes, nc (netcat) will do the job. A more compact way to use it:
nc -z <host> <port>
That way nc will only check if the port is open, exiting with 0 on success, 1 on failure.
For a quick interactive check (with a 5 seconds timeout):
nc -z -v -w5 <host> <port>
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Extract digits from a string in Java
I have a Java String object. I need to extract only digits from it. I'll give an example:
14 Answers
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How to create a HTTP server in Android? [closed]
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Consider this one:
https://github.com/NanoHttpd/nanohttpd.
Very small, written in Java. I used it without any problem.
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Why does Unicorn need to be deployed together with Nginx?
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Nginx
Unicorn
Refer to unicorn on github for more information.
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What are the best practices for using a GUID as a primary key, specifically regarding performance?
... to use the GUIDs as the Primary Keys, but I was thinking of using a Composite Primary Key (The GUID and maybe another field.)
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Simulate limited bandwidth from within Chrome?
Is there a way I can simulate various connection speeds from within Chrome?
13 Answers
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WAMP 403 Forbidden message on Windows 7
... This will certainly open up access from any IP address, but isnt that a little dangerous? The rule to allow 'from 127.0.0.1' should be enough to allow local access, if that is the main objective here, the 127.0.0.1 is basically a loop back to the network adaptor. If you type in the address bar 'ht...
SSH Key - Still asking for password and passphrase
I've been somewhat 'putting up' with Github always asking for my username and password when I clone a repository. I want to bypass this step because it is an annoyance within my workflow.
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Why is $$ returning the same id as the parent process?
I have problem with Bash, and I don't know why.
Under shell, I enter:
6 Answers
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