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Final arguments in interface methods - what's the point?
...entation that its value
will not change and can help avoid
programming errors.
However, a final modifier on a method parameter is not mentioned in the rules for matching signatures of overridden methods, and it has no effect on the caller, only within the body of an implementation. Also, as no...
How to specify in crontab by what user to run script? [closed]
...ut only works if you edit /etc/crontab directly. Otherwise, you may get an error like /bin/sh: www-data: command not found
Just before the program name:
*/1 * * * * www-data php5 /var/www/web/includes/crontab/queue_process.php >> /var/www/web/includes/crontab/queue.log 2>&1
...
Convert Newtonsoft.Json.Linq.JArray to a list of specific object type
... So how to handle if the array has a null field? This time i get the error JsonSerializationException. I want the data and i want it remain null for any null data.
– Ensar Turkoglu
Apr 19 '17 at 11:09
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Set database from SINGLE USER mode to MULTI USER
...
That error message generally means there are other processes connected to the DB. Try running this to see which are connected:
exec sp_who
That will return you the process and then you should be able to run:
kill [XXX]
Wher...
How to run Rails console in the test environment and load test_helper.rb?
...want to call one of them, you need an instance of that class. By trial and error, ActiveSupport::TestCase.new has one required parameter, so...pass it something.
If your test_helper has a method called create_user, you could invoke it this way:
ActiveSupport::TestCase.new("no idea what this is for"...
Postgresql GROUP_CONCAT equivalent?
...ner results to TEXT first. So "string_agg(value_field)" would generate an error if value_field is an integer. "string_agg(value_field::text)" would be required. The array_agg() method requires only one cast after the aggregation (rather than a cast per value).
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How do I stop Chrome from yellowing my site's input boxes?
...his works in Chrome (haven't tested), you could set this attribute when an error is encountered.
This can be used for both a single element
<input type="text" name="name" autocomplete="off">
...as well as for an entire form
<form autocomplete="off" ...>
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How do you append an int to a string in C++? [duplicate]
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How do you this avoid the compilation error that now with the templated solution std::string("a") + std::string("b") is ambiguous?
– Jason Harrison
Nov 9 '14 at 21:55
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Properly removing an Integer from a List
...'n' will be converted/boxed/unboxed as required or you will get a compiler errors if it cannot.
– Peter Lawrey
Dec 26 '10 at 14:53
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Laravel Eloquent: How to get only certain columns from joined tables
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I tried this and it shows an error SQLSTATE[42S22]: Column not found and it's SQL doesn't include the table in the with. The sql that it appears on the error is "SELECT fk_table.column1 FROM main_table".
– Michel Ayres
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