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Response.Redirect to new window
...up' since it is initiated by code and not a user action. if window.open is called when the user clicks on an element, that should sidestep the blocked popup action by the browser.
– steve
Nov 27 '13 at 18:50
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postgresql: INSERT INTO … (SELECT * …)
...te database and fetch result. For example:
psql dbtest
CREATE TABLE tblB (id serial, time integer);
INSERT INTO tblB (time) VALUES (5000), (2000);
psql postgres
CREATE TABLE tblA (id serial, time integer);
INSERT INTO tblA
SELECT id, time
FROM dblink('dbname=dbtest', 'SELECT id, time FRO...
Add missing dates to pandas dataframe
...f a question I had too, thanks! But was wondering if you knew how to dynamically create a list of with the dates which have events?
– Nick Duddy
Jun 5 '17 at 12:08
2
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When to use cla(), clf() or close() for clearing a plot in matplotlib?
... fig is an instance of a Figure:
fig.clf() clears the entire figure. This call is equivalent to plt.clf() only if fig is the current figure.
fig.clear() is a synonym for fig.clf()
Note that even del fig will not close the associated figure window. As far as I know the only way to close a figure w...
find() with nil when there are no records
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Yes, just do:
Challenge.find_by_id(10)
For Rails 4 and 5:
Challenge.find_by(id: 10)
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Specifying and saving a figure with exact size in pixels
...6):
plt.figure(figsize=(800/my_dpi, 800/my_dpi), dpi=my_dpi)
So you basically just divide the dimensions in inches by your DPI.
If you want to save a figure of a specific size, then it is a different matter. Screen DPIs are not so important anymore (unless you ask for a figure that won't fit in...
How to match all occurrences of a regex
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I guess it's because it's defined and called on String not on Regex ... But it does actually make sense. You can write a regular expression to capture all matches using Regex#match and iterate over captured groups. Here you write a partial match function and wan...
Parse query string into an array
...the second parameter to have the data put in an array instead of into individual variables.
$get_string = "pg_id=2&parent_id=2&document&video";
parse_str($get_string, $get_array);
print_r($get_array);
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LINQ: Distinct values
...")
.Select(element => new {
id = (int) element.Attribute("id"),
category = (int) element.Attribute("cat") })
.Distinct();
If you're trying to get a distinct set of values of a "larger" type, but only looking...
You can't specify target table for update in FROM clause
...s already been updated by the query as it's in progress. Neither of these side-effects is necessarily desirable, so the safest bet is to force you to specify what will happen using an extra table.
– siride
Mar 9 '13 at 20:54
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