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Check status of one port on remote host [closed]
...ll && echo Connected. || echo Fail.
Connected.
$ curl -s localhost:123 >/dev/null && echo Connected. || echo Fail.
Fail.
Possibly it may not won't work for all services, as curl can return different error codes in some cases (as per comment), so adding the following condition co...
Redis strings vs Redis hashes to represent JSON: efficiency?
...entation OR as hash memory optimization from this topic of a Redis guide: https://redis.io/topics/memory-optimization and store user as json string. Either way you may also compress long user attributes.
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Explanation of JSONB introduced by PostgreSQL
...nted in
the database encoding but not in UTF8 will be allowed.
Source: https://www.postgresql.org/docs/current/datat
Git Alias - Multiple Commands and Parameters
...performing redirections and return the status 0. Here're some usages: 1. a=123;$a errors, but a=123; : $a does not. 2. : > hello.txt empties hello.txt. 3. if [ "$a" = "hello" ];then : ;fi runs okay but errors without ':'. It's like pass in python. 4. : this is a comment, the colon followed by spa...
How to pull request a wiki page on GitHub?
...
We have found the best solution for the problem so far in https://devonfw.com :
Put your documentation into the git repository together with the code inside a documentation folder.
Extend your travis-ci build with some magic that stages all changes from that documentation folder ...
Flask-SQLalchemy update a row's information
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
JavaScript style for optional callbacks
...swered Mar 31 '14 at 11:16
ninja123ninja123
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Where can I find documentation on formatting a date in JavaScript?
...
toDateString: Implementation dependent, show only the date.
http://www.ecma-international.org/ecma-262/7.0/index.html#sec-date.prototype.todatestring
new Date().toDateString(); // e.g. "Fri Nov 11 2016"
toISOString: Show ISO 8601 date and time.
http://www.ecma-international.org...
Access restriction on class due to restriction on required library rt.jar?
...
http://www.digizol.com/2008/09/eclipse-access-restriction-on-library.html worked best for me.
On Windows: Windows -> Preferences -> Java -> Compiler -> Errors/Warnings
-> Deprecated and restricted API -> Forbidde...
How can I reverse a NSArray in Objective-C?
..., @"ce", @"cf", @"cg", @"ch",
@"ci", @"cj", @"ck", @"cl", @"cm", @"cn", @"co", @"cp", @"cq", @"cr", @"cs", @"ct", @"cu",
@"cv", @"cw", @"cx", @"cy", @"cz"];
NSDate *methodStart = [NSDate date];
NSArray *reversed = [[anArray reverseObjectEnumerator] allObjects];
NSDate *methodFinis...