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Why does the order in which libraries are linked sometimes cause errors in GCC?
...linker will not link to libraries that are not actually needed by the executable (and it detects this from left to right). My recent archlinux distribution doesn't use this flag by default, so it didn't give an error for not following the correct order.
It is not correct to omit the dependency of b...
How can I select multiple columns from a subquery (in SQL Server) that should have one record (selec
...
select t1.*, sq.*
from table1 t1,
(select a,b,c from table2 ...) sq
where ...
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How does virtual inheritance solve the “diamond” (multiple inheritance) ambiguity?
... be only 1 instance of the base A class not 2.
Your type D would have 2 vtable pointers (you can see them in the first diagram), one for B and one for C who virtually inherit A. D's object size is increased because it stores 2 pointers now; however there is only one A now.
So B::A and C::A are...
SQL RANK() versus ROW_NUMBER()
...
Look this example.
CREATE TABLE [dbo].#TestTable(
[id] [int] NOT NULL,
[create_date] [date] NOT NULL,
[info1] [varchar](50) NOT NULL,
[info2] [varchar](50) NOT NULL,
)
Insert some data
INSERT INTO dbo.#TestTable (id, create_date, in...
How does grep run so fast?
...looks first
for the final letter of the target string, and uses a lookup table to
tell it how far ahead it can skip in the input whenever it finds a
non-matching character.
GNU grep also unrolls the inner loop of Boyer-Moore, and sets up the
Boyer-Moore delta table entries in such a way...
Highlight label if checkbox is checked
...ector 456bereastreet.com/archive/200601/css_3_selectors_explained (last in table)
– Karl Adler
Jan 24 '13 at 15:47
@ab...
MySQL root access from all hosts
...on a remote Ubuntu machine. The root user is defined in the mysql.user table this way:
9 Answers
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How can I determine installed SQL Server instances and their versions?
...ry to find list of Instances Installed on a machine
DECLARE @GetInstances TABLE
( Value nvarchar(100),
InstanceNames nvarchar(100),
Data nvarchar(100))
Insert into @GetInstances
EXECUTE xp_regread
@rootkey = 'HKEY_LOCAL_MACHINE',
@key = 'SOFTWARE\Microsoft\Microsoft SQL Server',
@value_nam...
MySQL/SQL: Group by date only on a Datetime column
Having a table with a column like: mydate DATETIME ...
4 Answers
4
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Android Game Keeps Getting Hacked [closed]
...aid that, my suggestion to you is to implement some sort of online scoring table or similar, and when the user looks at the score table online, you can check the hash code you implemented and compare it with the associated gmail account. That way you can report the hack to google and send a nasty me...