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How to prevent the activity from loading twice on pressing the button
...you tried by adding this android:launchMode = "singleInstance" in Manifest file of your activity tag?
– Shylendra Madda
Jul 16 '19 at 13:35
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How to find largest objects in a SQL Server database?
...ceMB
FROM
sys.tables t
INNER JOIN
sys.indexes i ON t.object_id = i.object_id
INNER JOIN
sys.partitions p ON i.object_id = p.object_id AND i.index_id = p.index_id
INNER JOIN
sys.allocation_units a ON p.partition_id = a.container_id
WHERE
t.name NOT LIKE 'dt%' AND
i.o...
Real life example, when to use OUTER / CROSS APPLY in SQL
... FROM sys.parameters pa
WHERE pa.object_id = pr.object_id
ORDER BY pr.name) pa
ORDER BY pr.name,
pa.name
2) Calling a Table Valued Function for each row in the outer query
SELECT *
FROM sys.dm_exec_query_stats AS qs
CROSS APPLY s...
How to remove globally a package from Composer?
... you can use another way
cd $HOME/.config/composer
And in composer.json file remove some require positions
After all execute composer update
This is a long way, but more clear
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improve th...
What is the id( ) function used for?
I read the Python 2 docs and noticed the id() function:
13 Answers
13
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What is the HEAD in git?
... to be a difference between the last commit, the HEAD and the state of the file I can see in my directory.
5 Answers
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Rename an environment with virtualenvwrapper
...ice that will have doors as location and not django, you'll to change each file with the new location.
solution:
after renamed the folder execute the command below.
$ sed -i "s/doors/django/g" ~/.virtualenvs/django/bin/*
now if you do:
$ workon django
(django)hobbes3@hobbes3
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SQL WHERE ID IN (id1, id2, …, idn)
I need to write a query to retrieve a big list of ids.
9 Answers
9
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C++: variable 'std::ifstream ifs' has initializer but incomplete type
...if this is pretty noobish, but I'm pretty new to C++. I'm trying to open a file and read it using ifstream :
1 Answer
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Postgres unique constraint vs index
...
I had some doubts about this basic but important issue, so I decided to learn by example.
Let's create test table master with two columns, con_id with unique constraint and ind_id indexed by unique index.
create table master (
con_id integer unique,
ind_id integer
);
create uniq...