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Can “using” with more than one resource cause a resource leak?
...l zero and we leak the handle!
You need to write extremely clever code in order to prevent this leak from happening. Now, in the case of your Font resource, who the heck cares? We leak a font handle, big deal. But if you absolutely positively require that every unmanaged resource be cleaned up no ...
Backwards migration with Django South
...en you run ./manage.py migrate your_app, South runs all new migrations, in order. (It looks at the database tables to decide which ones are 'new').
However, you can also specify any migration by number, and South will migrate your database, either forward or backward, to take it to that point. So, ...
How can I check if a var is a string in JavaScript?
... there is no function form of typeof, you're just controlling order of operations with those parentheses. Some people may find it more readable in certain circumstances.
– Jon z
Oct 19 '16 at 21:33
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What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
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The order of evaluation of subexpressions, including
the arguments of a function call and
operands of operators (e.g., +, -, =, * , /), with the exception of:
the binary logical operators (&& and ||),
the ternary con...
SQL Server: SELECT only the rows with MAX(DATE)
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If rownumber() over(...) is available for you ....
select OrderNO,
PartCode,
Quantity
from (select OrderNO,
PartCode,
Quantity,
row_number() over(partition by OrderNO order by DateEntered desc) as rn
from YourTable) as T
whe...
Share cookie between subdomain and domain
...st"
It might not be accessible to your subdomain, like sub.localhost. In order to solve this issue you need to use Virtual Host. For exemple you can configure your virtual host with ServerName localhost.com then you will be able to store your cookie on your domain and subdomain like this:
documen...
How to get the size of a JavaScript object?
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It's PHP (gulp) that I have to look out for - I stopped loving her a long time ago but she pays the bills. Anyway, thanks Tom, feedback that like is way better than reputation points.
– thomas-peter
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How can one see the structure of a table in SQLite? [duplicate]
...
If you are using PHP you can get it this way:
<?php
$dbname = 'base.db';
$db = new SQLite3($dbname);
$sturturequery = $db->query("SELECT sql FROM sqlite_master WHERE name='foo'");
$table = $sturturequery->fetchArray...
How do I loop through or enumerate a JavaScript object?
...}
Both Object.keys() and Object.entries() iterate properties in the same order as a for...in loop but ignore the prototype chain. Only the object's own enumerable properties are iterated.
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How can I get a list of all functions stored in the database of a particular schema in PostgreSQL?
...og.pg_namespace n ON n.oid = p.pronamespace WHERE n.nspname ~ '^(public)$' ORDER BY 1, 2, 4; Above is the query generated (from \set ECHO_HIDDEN 'on').
– Simon D
Jan 6 '18 at 9:03
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