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How to return result of a SELECT inside a function in PostgreSQL?
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Use RETURN QUERY:
CREATE OR REPLACE FUNCTION word_frequency(_max_tokens int)
RETURNS TABLE (txt text -- also visible as OUT parameter inside function
, cnt bigint
, ratio bigint) AS
$func$
BEGIN
RETURN QUERY
SELECT t.txt
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How to get the directory of the currently running file?
In nodejs I use __dirname . What is the equivalent of this in Golang?
10 Answers
10
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How do you read from stdin?
...or this to work.)
If you want to prompt the user for input, you can use raw_input in Python 2.X, and just input in Python 3.
If you actually just want to read command-line options, you can access them via the sys.argv list.
You will probably find this Wikibook article on I/O in Python to be a us...
WPF - How to force a Command to re-evaluate 'CanExecute' via its CommandBindings
...ft.MvvmLight.Command will cause trouble mvvmlight.net/installing/changes#v5_0_2
– fuchs777
Jan 29 '16 at 12:49
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How do I convert Word files to PDF programmatically? [closed]
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var bits = p.EnhMetaFileBits;
var target = path1 +j.ToString()+ "_image.doc";
try
{
using (var ms = new MemoryStream((byte[])(bits)))
{
var image = System.Drawing.Image.FromStream(ms);
var pngTarget = Path.ChangeExtension(target, "png");
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Wildcards in jQuery selectors
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To get the id from the wildcard match:
$('[id^=pick_]').click(
function(event) {
// Do something with the id # here:
alert('Picked: '+ event.target.id.slice(5));
}
);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js">&...
Turn a string into a valid filename?
...n has been moved to django/utils/text.py, and that file also contains a get_valid_filename function.
– Denilson Sá Maia
Dec 3 '13 at 21:39
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How can I find the number of arguments of a Python function?
...lutions that either were deprecated or down right sneaky (peeking in the co_argcount attribute.)
– Dimitris Fasarakis Hilliard
Dec 16 '16 at 16:37
1
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Standardize data columns in R
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z = runif(10, 10, 20))
dat
dat2 <- dat %>% mutate_at(c("y", "z"), ~(scale(.) %>% as.vector))
dat2
which gives me this:
> dat
x y z
1 29.75859 3.633225 14.56091
2 30.05549 3.605387 12.65187
3 30.21689 3.318092 13.04672
4 29.53086 3.079992...
Read file data without saving it in Flask
... quick example: file = request.files.get('file') filetype = magic.from_buffer(file.read(1024))
– endolith
Dec 26 '14 at 20:00
7
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