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How to access a preexisting collection with Mongoose?
...ctions of UserSchema and I want to give each one a different name Eg: users_server1, users_server2, users_server3...
– Ragnar
Jun 6 '14 at 20:41
1
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Add a background image to shape in XML Android
...t;/shape>
</item>
<item android:drawable="@drawable/image_name_here" />
</layer-list>
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How to stop a JavaScript for loop?
... is a good approach. Thanks @T.J. Crowder
– techloris_109
Sep 13 '17 at 7:35
@T.J. Crowder which statement is a good a...
Rendering JSON in controller
...ting your own dogfood and doing both
In both cases render :json => some_data will JSON-ify the provided data. The :callback key in the second example needs a bit more explaining (see below), but it is another variation on the same idea (returning data in a way that JavaScript can easily handle....
Rails find_or_create_by more than one attribute?
There is a handy dynamic attribute in active-record called find_or_create_by:
5 Answers
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How can I efficiently download a large file using Go?
....Errorf("bad status: %s", resp.Status)
}
// Writer the body to file
_, err = io.Copy(out, resp.Body)
if err != nil {
return err
}
return nil
}
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How to form tuple column from two columns in Pandas
...rtable with zip. It comes in handy when dealing with column data.
df['new_col'] = list(zip(df.lat, df.long))
It's less complicated and faster than using apply or map. Something like np.dstack is twice as fast as zip, but wouldn't give you tuples.
...
extract part of a string using bash/cut/split
... \) marks a capture group. This is \([^:]*\).
The [^:] says any character _except a colon, and the * means zero or more.
.* means the rest of the line.
\1 means substitute what was found in the first (and only) capture group. This is the name.
Here's the breakdown matching the string with the re...
How to convert wstring into string?
...de <locale>
#include <vector>
int main() {
std::setlocale(LC_ALL, "");
const std::wstring ws = L"ħëłlö";
const std::locale locale("");
typedef std::codecvt<wchar_t, char, std::mbstate_t> converter_type;
const converter_type& converter = std::use_facet<converte...
Struct constructor: “fields must be fully assigned before control is returned to the caller.”
...ample, prefix all fields with an underscore, so you can simply call this:
_probability = probability;
and see easily what's happening.
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