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Command substitution: backticks or dollar sign / paren enclosed? [duplicate]
... forms in one script would make that script less likely to be portable: In order for the script to work properly, the shell that's executing it has to support BOTH forms, not just one form or the other.
For making a shell script understandable, I'd personally prefer sticking to one form or the othe...
Saving enum from select in Rails 4.1
...ast.status
Contract Load (0.2ms) SELECT "contracts".* FROM "contracts" ORDER BY "contracts"."id" DESC LIMIT ? [["LIMIT", 1]]
=> "active"
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Java, List only subdirectories from a directory, not files
... were using is actually the curent path, so it will always return true. In order to see if the child is a subdirectory or not you need to test that child.
File file = new File("/path/to/directory");
String[] directories = file.list(new FilenameFilter() {
@Override
public boolean accept(File cur...
Maximum size of an Array in Javascript
...ions of datasets, and even then, the javascript calculation latency was on order of tens of milliseconds. Unless you're worried about going over the array size limit, I don't think you have much to worry about.
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Failed to build gem native extension (installing Compass)
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In order to install compass On Mac OS X 10.10 (Yosemite)had to perform the following:
1. Set Up Ruby Environment
Ensure ruby is installed and up to date: ruby -v
Update gem's sudo gem update --system
2. Set Up MAC Environme...
Angular IE Caching issue for $http
... Jul 1997 05:00:00 GMT";
}]);
I had to merge 2 of the above solutions in order to guarantee the correct usage for all methods, but you can replace common with get or other method i.e. put, post, delete to make this work for different cases.
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How do I check if file exists in Makefile so I can delete it?
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In order for this to work you need to add || true at the end so the command return true when file don't exists.
– jcubic
Jan 21 '18 at 14:17
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How to convert an int to string in C?
...as optimized as it gets. At least you could be 100% sure you would not get orders of magnitude downgrade of a generic sprintf. It would be nice to see whatever counterexample you have in mind, with compiler version and settings.
– Eugene Ryabtsev
Sep 30 '15 at ...
How to create cron job using PHP?
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You have to set php-max-execution-time to be 0 in order to run this forever. Also if some error occurs in your script, it wont execute again until you restart it manually.
– Hassan Raza
Nov 19 '18 at 12:10
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Rails DB Migration - How To Drop a Table?
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@mjnissim and fflyer05 are correct, in order to avoid any weird thing you should recreate the table in the down method.
– Sebastialonso
Jan 23 '15 at 16:43
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