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Accessing last x characters of a string in Bash
I found out that with ${string:0:3} one can access the first 3 characters of a string. Is there a equivalently easy method to access the last three characters?
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What is the equivalent of 'describe table' in SQL Server?
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use Select * From INFORMATION_SCHEMA.COLUMNS Where TABLE_NAME = 'TABLENAME' if you don't want to use a stored procedure
– Matias Elorriaga
Aug 4 '14 at 18:21
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When is assembly faster than C?
...l1
fstp result
fstp result
}
return result;
}
int main (int, char **)
{
int count = 1000000;
float *source = new float [count];
for (int i = 0 ; i < count ; ++i) {
source [i] = static_cast <float> (rand ()) / static_cast <float> (RAND_MAX);
}
LARGE_INTEG...
getting exception “IllegalStateException: Can not perform this action after onSaveInstanceState”
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@t0mm13b: to add more as 600 chars are not enough, you have to investigate first what is really causing this for you. You have also to realize that above is an ugly hack and I am not taking any responsibility if it runs or not (for me was the best soluti...
Get selected subcommand with argparse
When I use subcommands with python argparse, I can get the selected arguments.
2 Answers
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PostgreSQL: Modify OWNER on all tables simultaneously in PostgreSQL
...and sequences too. Here's what I did:
Tables:
for tbl in `psql -qAt -c "select tablename from pg_tables where schemaname = 'public';" YOUR_DB` ; do psql -c "alter table \"$tbl\" owner to NEW_OWNER" YOUR_DB ; done
Sequences:
for tbl in `psql -qAt -c "select sequence_name from information_schem...
Mongoose query where value is not null
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$ne
selects the documents where the value of the field is not equal to
the specified value. This includes documents that do not contain the
field.
User.find({ "username": { "$ne": 'admin' } })
$nin
$nin selects the do...
ADB No Devices Found
...the same problem on a LG G3 Device that was not getting detected on a Mac. Selecting PTP mode fixed it. Thanks!
– shauvik
Jul 10 '15 at 23:40
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Google Sheets API Setup · App Inventor 2 中文网
...ou have not created a project
before, you can create your first project by selecting [CREATE PROJECT].
If you are using an existing Developer Account and already have a Project, you
will be on a Project’s Dashboard. To create a new Project, click on the drop
down menu at the top of the webpage....
How to export table as CSV with headings on Postgresql?
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@arilwan psql -c "\COPY (SELECT * FROM mytable) TO STDOUT" > mytable.csv
– Juha Palomäki
Jun 6 '19 at 16:00
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