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Fastest way to check if a string is JSON in PHP?
...string) {
json_decode($string);
return (json_last_error() == JSON_ERROR_NONE);
}
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How to delete and replace last line in the terminal using bash?
...arriage return with \r
seq 1 1000000 | while read i; do echo -en "\r$i"; done
from man echo:
-n do not output the trailing newline
-e enable interpretation of backslash escapes
\r carriage return
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Portable way to get file size (in bytes) in shell?
...disk. It was slow enough that I could re-write the script before the first one finished, came here to remember how I did it lol.
– Camilo Martin
Jul 27 '12 at 13:43
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What is the difference between . (dot) and $ (dollar sign)?
...==>
f . g . h $ x
In other words in a chain of $s, all but the final one can be replaced by .
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How to convert an entire MySQL database characterset and collation to UTF-8?
...rent data is actually in the current char set. If your columns are set to one char set but your data is really stored in another then you will need to check the MySQL manual on how to handle this.
ALTER TABLE tbl_name CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;
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Finding duplicates in O(n) time and O(1) space
...oop permutes the array so that if element x is present at least once, then one of those entries will be at position A[x].
Note that it may not look O(n) at first blush, but it is - although it has a nested loop, it still runs in O(N) time. A swap only occurs if there is an i such that A[i] != i, a...
AngularJS ng-class if-else expression
... from the variable is the better solution.
– VtoCorleone
Nov 19 '14 at 19:34
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This is just a hin...
What is the proper way to display the full InnerException?
...cases, but if you're using Entity Framework, this will not include ValidationErrors in DbEntityValidationException. See my response below.
– Sylvain Rodrigue
Aug 2 at 10:18
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How to import a module given its name as string?
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One problem with this solution for the OP is that trapping exceptions for one or two bad "command" modules makes his/her whole command-app fail on one exception. Personally I'd for loop over each import individually wrapped i...
How can I configure the font size for the tree item in the package explorer in Eclipse?
...evelopers (see, e.g., bugs 49548, 202091). (Grumble.) The font used is the one set by the general look-and-feel for whatever desktop you are using.
On Linux it is possible to override the system font when you invoke Eclipse. An excellent writeup of various possibilities is here, to which I owe this...