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Add querystring parameters to link_to
I'm having difficultly adding querystring parameters to link_to UrlHelper. I have an Index view, for example, that has UI elements for sorting, filtering, and pagination (via will_paginate). The will_paginate plugin manages the intra-page persistence of querystring parameters correctly.
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How do I validate a date string format in python?
I have a python method which accepts a date input as a string .
5 Answers
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How to convert SSH keypairs generated using PuTTYgen (Windows) into key-pairs used by ssh-agent and
...it will automatically show you an OpenSSH compatible, copyable, public key string in the UI.
– UpTheCreek
May 3 '15 at 18:55
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How do I pass multiple attributes into an Angular.js attribute directive?
... a boolean value using a object? I tried {{true}} but it still returns the string value true.
– Peter Boomsma
Nov 20 '19 at 16:23
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Python regular expressions return true/false
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re.match(...) would return true if the string's beginning part match the regular pattern. While search will confirm the pattern anywhere in the string.
– Yu Shen
Jun 8 '13 at 9:57
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Pandas aggregate count distinct
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Just adding to the answers already given, the solution using the string "nunique" seems much faster, tested here on ~21M rows dataframe, then grouped to ~2M
%time _=g.agg({"id": lambda x: x.nunique()})
CPU times: user 3min 3s, sys: 2.94 s, total: 3min 6s
Wall time: 3min 20s
%time _=g.ag...
How to sort with lambda in Python
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This does not work for string integers. Check this out! lst = [('999', '9'), ('303', '30'), ('343', '34')] lst.sort(key=lambda x: x[1]) print(lst)
– Daniel Kua
Jun 13 at 4:26
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How to specify an array of objects as a parameter or return value in JSDoc?
...the following if you have an array of a specific type (such as an array of strings) as:
1 Answer
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runOnUiThread in fragment
...t hour_sdf = new SimpleDateFormat("HH:mm a");
String currentDate = date_sdf.format(currentTime);
String currentHour = hour_sdf.format(currentTime);
dateTextView.setText(currentDate);
hou...
What is the maximum possible length of a query string?
...r Protocol — HTTP/1.1) states there is no limit to the length of a query string (section 3.2.1). RFC 3986 (Uniform Resource Identifier — URI) also states there is no limit, but indicates the hostname is limited to 255 characters because of DNS limitations (section 2.3.3).
While the specificatio...