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Create dynamic URLs in Flask with url_for()
... I have a question, in the first example, the index method was passed as a string while in the second method, the find_question is being passed as variable. Why?
– आनंद
Mar 26 '17 at 10:05
...
Get last element of Stream/List in a one-liner
... Goetz makes a point, further the API documentation states that reduce("", String::concat) is an inefficient but correct solution for string concatenation, which implies maintenance of the encounter order.The intention is well-known,the documentation has to catch up.
– Holger
...
“unary operator expected” error in Bash if condition
...rely on
if [[ $aug1 == "and" ]];
to compare the value of $aug1 with the string and.
If you use [ ... ], you always need to remember to double quote variables like this:
if [ "$aug1" = "and" ];
If you don't quote the variable expansion and the variable is undefined or empty, it vanishes from t...
Sorting data based on second column of a file
...rt command:
sort -k2 -n yourfile
-n, --numeric-sort compare according to string numerical value
For example:
$ cat ages.txt
Bob 12
Jane 48
Mark 3
Tashi 54
$ sort -k2 -n ages.txt
Mark 3
Bob 12
Jane 48
Tashi 54
share
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Return empty cell from formula in Excel
...mpty cell from an Excel formula, but it appears that Excel treats an empty string or a reference to an empty cell differently than a true empty cell. So essentially I need something like
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return query based on date
....3 using Node v0.12.7 and v4.4.4 and used:
{ $gte: new Date(dateVar).toISOString() }
I'm passing in an ISODate (e.g. 2016-04-22T00:00:00Z) and this works for a .find() query with or without the toISOString function. But when using in an .aggregate() $match query it doesn't like the toISOString fu...
REST API error return good practices [closed]
... Should I include my detailed error message in the body, ie. an XML code/string pair? How are clients best dealing with this? For instance I know C# WebRequest based clients would throw 'Bad Request' or 'Forbidden' and not give the response body.
– Remus Rusanu
...
How to replace text between quotes in vi
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The cursor is not required to be within the double-quoted string, as the command defaults to changing the first such string in the line
– Eugene Yarmash
Jul 24 '12 at 12:22
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Convert Python dictionary to JSON array
... means of unambiguously encoding a sequence of arbitrary bytes as an ASCII string - such as base64.
>>> import json
>>> from base64 import b64encode, b64decode
>>> my_dict = {'LeafTemps': '\xff\xff\xff\xff',}
>>> my_dict['LeafTemps'] = b64encode(my_dict['LeafTem...
How do I list all versions of a gem available at a remote site?
...re safe (if putting sth like that in a script or README) is to put it in a string so that we're sure we pass it 1-1, i.e. gem list '^rhc$' etc.
– mgol
Oct 2 '13 at 3:04
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