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Why does Enumerable.All return true for an empty sequence? [duplicate]
The code creates an empty collection of string, then tries to determine if all the elements in the collection are "ABC".
If you run it, b will be true.
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How to remove all of the data in a table using Django
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Inside a manager:
def delete_everything(self):
Reporter.objects.all().delete()
def drop_table(self):
cursor = connection.cursor()
table_name = self.model._meta.db_table
sql = "DROP TABLE %s;" % (table_name, )
cursor.execute(sql)
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Is it safe to use -1 to set all bits to true?
...s one:
unsigned long a = ~0u;
It won't necessarily store a pattern with all bits 1 into a. But it will first create a pattern with all bits 1 in an unsigned int, and then assign it to a. What happens when unsigned long has more bits is that not all of those are 1.
And consider this one, which wi...
Get list of all tables in Oracle?
How do I query an Oracle database to display the names of all tables in it?
23 Answers
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SQL Server query to find all permissions/access for all users in a database
I would like to write a query on a sql 2008 that will report all the users that have access to a specific database, or objects within the database such as tables, views, and stored procedures, either directly or due to roles, etc. This report would be used for security auditing purposes. Not sure ...
How do I turn off PHP Notices?
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@user try a phpinfo() to see whether the setting actually applies. Forgive me, but I strongly doubt that you have found a bug in PHP 5.3 - I will only believe it when I see it :)
– Pekka
May 20 '10 at 11:36
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How can I stage and commit all files, including newly added files, using a single command?
How can I stage and commit all files, including newly added files, using a single command?
12 Answers
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Set up git to pull and push all branches
I'd like to push and pull all the branches by default, including the newly created ones.
8 Answers
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Get all related Django model objects
How can I get a list of all the model objects that have a ForeignKey pointing to an object? (Something like the delete confirmation page in the Django admin before DELETE CASCADE).
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How do you truncate all tables in a database using TSQL?
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agreed..i thought since he specifically asked for truncating tables, he already solved the problem with foreign keys..
– Gulzar Nazim
Oct 1 '08 at 17:31
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