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SQLite - UPSERT *not* INSERT or REPLACE
...e columns in the table: ID, NAME, ROLE
BAD: This will insert or replace all columns with new values for ID=1:
INSERT OR REPLACE INTO Employee (id, name, role)
VALUES (1, 'John Foo', 'CEO');
BAD: This will insert or replace 2 of the columns... the NAME column will be set to NULL or the def...
Thread-safe List property
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ConcurrentBag doesn't implement IList and is not actually thread safe version of List
– Vasyl Zvarydchuk
Apr 3 '17 at 20:55
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PyPy — How can it possibly beat CPython?
... an object can save you the need to do multiple pointer dereferences to finally arrive at the method you want to call.
Q2. Which Python implementation was used to implement PyPy?
The PyPy interpreter is implemented in RPython which is a statically typed subset of Python (the language and not the ...
Navigation in django
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I like this idea a lot, especially for flexibility, but it comes with the less-DRY trade-off. I did start using this in a site though.
– anonymous coward
Sep 22 '09 at 14:47
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Laravel Eloquent Sum of relation's column
...The documentation is a little light for some of the Collection methods but all the query builder aggregates are seemingly available besides avg() that can be found at http://laravel.com/docs/queries#aggregates.
share
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Unsafe JavaScript attempt to access frame with URL
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From a child document of different origin you are not allowed access to the top window's location.hash property, but you are allowed to set the location property itself.
This means that given that the top windows location is http://example.com/page/, instead of doing
parent.lo...
How to vertically align text inside a flexbox?
I would like to use flexbox to vertically align some content inside an <li> but not having great success.
10 Answer...
How to check that an object is empty in PHP?
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empty doesn't actually check if an array is empty, empty($var) equivalent to (!isset($var) || !$var). You can replace your empty($arr)s with !$arr since array() == FALSE
– Timothy Zorn
Aug 20 '15 at 18:35...
SQL query for finding records where count > 1
... a user ID, an account number, a ZIP code and a date. I would like to find all records for all users that have more than one payment per day with the same account number.
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What is the use of a private static variable in Java?
... as ClassName.varName . I am also aware that static members are shared by all instances of a class and are not reallocated in each instance.
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