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Can I create a named default constraint in an add column statement in SQL Server?
...
ID INT IDENTITY NOT NULL CONSTRAINT PK_TestTable PRIMARY KEY
--let the string be unique (results in a unique index implicitly)
,SomeUniqueString VARCHAR(100) NOT NULL CONSTRAINT UQ_TestTable_SomeUniqueString UNIQUE
--define two constraints, one for a default value and one for a value check
,So...
Python naming conventions for modules
...ention? Because I notice the built-in classes are in lowercase, e.g. list, string, etc.
– Ram Rachum
Apr 2 '09 at 23:54
4
...
Give all the permissions to a user on a DB
...-- use instead of EXECUTE to see generated commands
EXECUTE (
SELECT string_agg(format('GRANT USAGE ON SCHEMA %I TO my_user', nspname), '; ')
FROM pg_namespace
WHERE nspname <> 'information_schema' -- exclude information schema and ...
AND nspname NOT LIKE 'pg\_%' -...
What are Makefile.am and Makefile.in?
...ude <stdio.h>
int main (void) {
puts ("Hello world from " PACKAGE_STRING);
return 0;
}
Usage
autoreconf --install
mkdir build
cd build
../configure
make
sudo make install
autoconf_hello_world
sudo make uninstall
This outputs:
Hello world from automake_hello_world 1.0
Notes
autor...
What is the difference between `sorted(list)` vs `list.sort()`?
...all in-place operations).
sorted() works on any iterable, not just lists. Strings, tuples, dictionaries (you'll get the keys), generators, etc., returning a list containing all elements, sorted.
Use list.sort() when you want to mutate the list, sorted() when you want a new sorted object back. Use...
SignalR: Why choose Hub vs. Persistent Connection?
...ver side in the OnReceived method. You'd also have to deserialize the data string there instead of receiving the strongly typed objects as you do with hub methods.
There aren't many reasons to choose PersistentConnection over Hubs. One reason I'm aware of is that it is possible to send preserialize...
Can jQuery get all CSS styles associated with an element?
...()] = (css[css[i]]);
}
}
} else if (typeof css == "string") {
css = css.split("; ");
for (var i in css) {
var l = css[i].split(": ");
s[l[0].toLowerCase()] = (l[1]);
}
}
return s;
}
Pass a jQuery object into css() and ...
When is localStorage cleared?
...less popular) alternatives to
cookies include techniques involving query strings, hidden form
fields, flash based local shared objects, etc. Each with their own set
of problems related to security, ease of use, size restrictions etc.
So up until now we have been using pretty bad ways of stor...
Why use Abstract Base Classes in Python?
...t.
For example, if there is a __str__() method, it is expected to return a string representation of the object. It could delete all contents of the object, commit the transaction and spit a blank page out of the printer... but there is a common understanding of what it should do, described in the Py...
Difference between Lookup() and Dictionary(Of list())
... Stopwatch stopwatch = new Stopwatch();
var list = new List<string>();
for (int i = 0; i < 5000000; ++i)
{
list.Add(i.ToString());
}
stopwatch.Start();
var lookup = list.ToLookup(x => x);
stopwatch.Stop();
Co...