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Why no generics in Go?
...ject or Objective-C's id types. Type information is preserved and can be "cast" (asserted, actually) back to its concrete type. Get the gritty details here: golang.org/ref/spec#Type_assertions
– tbone
Aug 25 '13 at 20:50
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Properly removing an Integer from a List
...calls the method that best suits your argument. Auto boxing and implicit upcasting is only performed if there's no method which can be called without casting / auto boxing.
The List interface specifies two remove methods (please note the naming of the arguments):
remove(Object o)
remove(int index...
Rounding a double to turn it into an int (java)
...d, it returns a Long when the input param is Double.
So, you will have to cast the return value:
int a = (int) Math.round(doubleVar);
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C# HttpWebRequest vs WebRequest
... HttpWebRequest.Create or something like HttpWebRequest.CreateHttp without casting. The first would be something like public new static HttpWebRequest Create(string url). Either way, if the url wasn't HTTP(s), it should just throw some InvalidArgumentException.
– Matthew Flas...
Replace a newline in TSQL
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If the column data type is text then you need to cast to nvarchar first then replace SELECT REPLACE(REPLACE(cast(@str as nvarchar(max)), CHAR(13), ''), CHAR(10), '')
– akd
Mar 23 '16 at 10:33
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Can I concatenate multiple MySQL rows into one field?
... your needs. To calculate and assign the value:
SET group_concat_max_len = CAST(
(SELECT SUM(LENGTH(hobbies)) + COUNT(*) * LENGTH(', ')
FROM peoples_hobbies
GROUP BY person_id)
AS UNSIGNED
);
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Use different Python version with virtualenv
... edited Dec 4 '18 at 19:54
wjandrea
12.3k55 gold badges2424 silver badges4747 bronze badges
answered Oct 7 '09 at 21:33
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Difference between numeric, float and decimal in SQL Server
...link:
"I frequently do calculations against decimal values. In some cases casting decimal values to float ASAP, prior to any calculations, yields better accuracy. "
http://sqlblog.com/blogs/alexander_kuznetsov/archive/2008/12/20/for-better-precision-cast-decimals-before-calculations.aspx
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Extract date (yyyy/mm/dd) from a timestamp in PostgreSQL
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You can cast your timestamp to a date by suffixing it with ::date. Here, in psql, is a timestamp:
# select '2010-01-01 12:00:00'::timestamp;
timestamp
---------------------
2010-01-01 12:00:00
Now we'll cast it to a ...
Why doesn't Java support unsigned ints?
...tially can be treated as an unsigned integer. You would have to explicitly cast arithmetic operations back into char, but it does provide you with a way to specify unsigned numbers.
char a = 0;
char b = 6;
a += 1;
a = (char) (a * b);
a = (char) (a + b);
a = (char) (a - 16);
b = (char) (b % 3);
b = ...