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SQL query to find record with ID not in another table
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@PrinceJea actually it depends. See here for clarification
– John Woo
Aug 21 '12 at 7:32
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is of a type that is invalid for use as a key column in an index
...x. nvarchar(100)
2. Create a check constraint that compares the value with all the keys in the table.
The condition is:
([dbo].[CheckKey]([key])=(1))
and [dbo].[CheckKey] is a scalar function defined as:
CREATE FUNCTION [dbo].[CheckKey]
(
@key nvarchar(max)
)
RETURNS bit
AS
BEGIN
declare...
Why does (“foo” === new String(“foo”)) evaluate to false in JavaScript?
I was going to start using === (triple equals, strict comparison) all the time when comparing string values, but now I find that
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Does BroadcastReceiver.onReceive always run in the UI thread?
...p, I create a custom BroadcastReceiver and register it to my Context manually via Context.registerReceiver . I also have an AsyncTask that dispatches notifier-Intents via Context.sendBroadcast . The intents are sent from a non-UI worker thread, but it seems that BroadcastReceiver.onReceive (...
How can I git stash a specific file?
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Not the most user-friendly approach, but it gets the work done if you really need it.
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Consequences of using graft in Mercurial
...state F with the normal delta +f. There's nothing strange here — we have all the states (D, E, and F) in the repository already. So seen like this, it's clear that we can merge D and F.
Merging is a matter of "completing the diamond". So we find a new state M that is a mix of D and F and where th...
Using lambda expressions for event handlers
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Really? Interesting - so, if I register two anonymous functions that look the same (w.l.o.g. have an empty body), and then I unregister (using -=) another anonymous function that too has an empty body, it is essentially undefin...
Reading a string with scanf
...ld take it then that this would not be the case with a pointer to a string allocated through malloc()?
– abeln
Mar 23 '11 at 15:04
4
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Why do we need C Unions?
...le types together:
enum Type { INTS, FLOATS, DOUBLE };
struct S
{
Type s_type;
union
{
int s_ints[2];
float s_floats[2];
double s_double;
};
};
void do_something(struct S *s)
{
switch(s->s_type)
{
case INTS: // do something with s->s_ints
break;
case F...
What does a type followed by _t (underscore-t) represent?
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As Douglas Mayle noted, it basically denotes a type name. Consequently, you would be ill-advised to end variable or function names with '_t' since it could cause some confusion. As well as size_t, the C89 standard defines wchar_t, off_t, ptrdiff_t, and p...