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How to check existence of user-define table type in SQL Server 2008?
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You can look in sys.types or use TYPE_ID:
IF TYPE_ID(N'MyType') IS NULL ...
Just a precaution: using type_id won't verify that the type is a table type--just that a type by that name exists. Otherwise gbn's query is probably better.
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Django: Set foreign key using integer?
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Yep:
employee = Employee(first_name="Name", last_name="Name")
employee.type_id = 4
employee.save()
ForeignKey fields store their value in an attribute with _id at the end, which you can access directly to avoid visiting the database.
The _id version of a ForeignKey is a particularly useful as...
Should I pass a shared_ptr by reference? [duplicate]
...ime type information is really needed. So something like boost::typeindex::type_id should make things better.
– FrankHB
Sep 21 '15 at 0:52
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How to update PATH variable permanently from Windows command line?
...ey(tree, path, varname), value)
def query_value(key, varname):
value, type_id = winreg.QueryValueEx(key, varname)
return value
def yield_all_entries(tree, path, key):
i = 0
while True:
try:
n,v,t = winreg.EnumValue(key, i)
yield reg_entry(tree, path,...
MFC CListCtrl使用方法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...le.php/c983/
http://www.vchelp.net/vchelp/archive.asp?type_id=9&class_id=1&cata_id=1&article_id=1088&search_term=
(16) 自适应宽度的listctrl
http://www.codeproject.com/useritems/AutosizeListCtrl.asp
(17) 改变ListCtrl高...
#pragma once vs include guards? [duplicate]
...ndering if I should go with the traditional include guards or use #pragma once for our code. I would think letting the compiler deal with #pragma once will yield faster compiles and is less error prone when copying and pasting. It is also slightly less ugly ;)
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Is #pragma once a safe include guard?
I've read that there is some compiler optimization when using #pragma once which can result in faster compilation. I recognize that is non-standard, and thus could pose a cross-platform compatibility issue.
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Difference between require, include, require_once and include_once?
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There are require and include_once as well.
So your question should be...
When should I use require vs. include?
When should I use require_once vs. require
The answer to 1 is described here.
The require() function is identical to include(), exce...
Function in JavaScript that can be called only once
I need to create a function which can be executed only once, in each time after the first it won't be executed. I know from C++ and Java about static variables that can do the work but I would like to know if there is a more elegant way to do this?
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Why is require_once so bad to use?
...g I read about better PHP coding practices keeps saying don't use require_once because of speed.
14 Answers
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