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How do I use itertools.groupby()?
...dged" in this way. Since all of the itertools are iterators, they must be cast to a builtin (list(), tuple()) or consumed in a loop/comprehension to display the contents. These are redundancies the author likely excluded to conserve space.
– pylang
Oct 25 '18...
How to see if an object is an array without using reflection?
...e value of the RelationalExpression is not null and the reference could be cast to the ReferenceType without raising a ClassCastException. Otherwise the result is false.
That means you can do something like this:
Object o = new int[] { 1,2 };
System.out.println(o instanceof int[]); // prints "true"...
Which are more performant, CTE or temporary tables?
...Y, B INT , F CHAR(8000) NULL);
INSERT INTO T(B)
SELECT TOP (1000000) 0 + CAST(NEWID() AS BINARY(4))
FROM master..spt_values v1,
master..spt_values v2;
Example 1
WITH CTE1 AS
(
SELECT A,
ABS(B) AS Abs_B,
F
FROM T
)
SELECT *
FROM CTE1
WHERE A = 780
Notice in the plan above ...
Why does ReSharper want to use 'var' for everything?
...me is not too long and you don't use new on the right side (or an explicit cast) resharper should not suggest it.
– Tim Schmelter
Jan 18 '17 at 8:47
...
select * vs select column
If I just need 2/3 columns and I query SELECT * instead of providing those columns in select query, is there any performance degradation regarding more/less I/O or memory?
...
Why is super.super.method(); not allowed in Java?
...hat you can access shadowed variables from superclasses of superclasses by casting this:
interface I { int x = 0; }
class T1 implements I { int x = 1; }
class T2 extends T1 { int x = 2; }
class T3 extends T2 {
int x = 3;
void test() {
System.out.println("x=\t\t" ...
WCF timeout exception detailed investigation
...icle. To set this operation timeout
property configuration, we have to
cast our proxy to IContextChannel in
WCF client application before calling
the operation contract methods.
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imp...
Running multiple AsyncTasks at the same time — not possible?
I'm trying to run two AsyncTasks at the same time. (Platform is Android 1.5, HTC Hero.)
However, only the first gets executed. Here's a simple snippet to describe my problem:
...
Why does AngularJS include an empty option in select?
... Thanks! In my case I can't use ng-init (no default value) so I casted my model to a string and it worked!
– Rodrigo Graça
Aug 3 '16 at 15:06
...
Select something that has more/less than x character
...eed to use the below query.
SELECT *
FROM OPENQUERY(LINK_DB,'SELECT
CITY,
cast(STATE as varchar(40))
FROM DATABASE')
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