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How get integer value from a enum in Rails?
... :(
The best method I can see for now is:
my_model.sale_info_before_type_cast
Shadwell's answer also continues to work for rails 5.
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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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End of support for python 2.7?
... they will leave the lights on in the source control repository and on the FTP server, so as to capture the free labor from people at large companies who have an interest in continuing to support 2.7.
The alternative is that RH and other vendors create proprietary and expensive forks of Python 2.7...
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...
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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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 = ...
What is the best way to check for Internet connectivity using .NET?
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Instead of checking, just perform the action (web request, mail, ftp, etc.) and be prepared for the request to fail, which you have to do anyway, even if your check was successful.
Consider the following:
1 - check, and it is OK
2 - start to perform action
3 - network goes down
4 - acti...
Efficiently convert rows to columns in sql server
... + 'SELECT ''INSERT INTO @ColumnListWithActions VALUES ('' + CAST( ROW_NUMBER() OVER (ORDER BY [NAME]) as nvarchar(10)) + '', '' + '''''''' + [NAME] + ''''''''+ '', ''''S'''');'''
+ 'FROM [' + @DB_Name + '].sys.columns '
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Spring ApplicationContext - Resource leak: 'context' is never closed
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A simple cast solves the issue:
((ClassPathXmlApplicationContext) fac).close();
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