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IntelliJ: Never use wildcard imports
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edited Jan 31 at 15:08
Guildenstern
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MySQL selecting yesterday's date
...d wordy case statement, is that in mysql boolean values are 1 for true and 0 for false, so summing a condition effectively counts how many times it's true. Using this pattern can neaten up your SQL code.
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Convert hex string to int
...too big for an int (which is 4 bytes and signed).
Use
Long.parseLong("AA0F245C", 16);
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Many-to-many relationship with the same model in rails?
...post_b_id: 16, category: nil>]
>> connection = b.post_connections[0]
=> #<PostConnection id: 3, post_a_id: 17, post_b_id: 16, category: nil>
>> connection.category = "scolding"
=> "scolding"
>> connection.save!
=> true
Instead of creating the association and the...
Rule-of-Three becomes Rule-of-Five with C++11?
... is considered deprecated. In particular, the following perfectly valid C++03 polymorphic base class
class C {
virtual ~C() { } // allow subtype polymorphism
};
should be rewritten as follows:
class C {
C(const C&) = default; // Copy constructor
C(C&&) = default...
Why does C++ need a separate header file?
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105
You seem to be asking about separating definitions from declarations, although there are other ...
How to exit from PostgreSQL command line utility: psql
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Type \q and then press ENTER to quit psql.
UPDATE: 19-OCT-2018
As of PostgreSQL 11, the keywords "quit" and "exit" in the PostgreSQL command-line interface have been included to help make it easier to leave the command-line tool.
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How can I trim beginning and ending double quotes from a string?
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edited Apr 9 '10 at 15:39
answered Apr 9 '10 at 15:29
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Test method is inconclusive: Test wasn't run. Error?
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– Geoffrey Hudik
Mar 3 '14 at 21:10
5
Thanks, for me, I put the appsettings on top of configura...