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Simple regular expression for a decimal with a precision of 2
...deci_num_checker = re.compile(r"""^[0-9]+(\.[0-9]{1,2})?$""")
valid = ["123.12", "2", "56754", "92929292929292.12", "0.21", "3.1"]
invalid = ["12.1232", "2.23332", "e666.76"]
assert len([deci_num_checker.match(x) != None for x in valid]) == len(valid)
assert [deci_num_checker.match(x) == None for ...
WARNING: Can't verify CSRF token authenticity rails
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Ugrading from an older app to rails 3.1, including the csrf meta tag is still not solving it. On the rubyonrails.org blog, they give some upgrade tips, and specifically this line of jquery which should go in the head section of your layout:
$(document).ajaxSe...
How to run a hello.js file in Node.js on windows?
...e place to kick-off the execution of a file. More here: nodejs.org/docs/v0.3.1/api/repl.html
– Wayne
Jul 18 '11 at 20:18
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join list of lists in python [duplicate]
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in Python 3.1+, wrap map withlist(), or else you'll see <map object at 0x0000...> when you print the result
– kit
May 21 '16 at 15:54
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Get decimal portion of a number with JavaScript
...is:
var decPart = (n+"").split(".")[1];
Specifically, I was using 100233.1 and I wanted the answer ".1".
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How to get last N records with activerecord?
...a good way of implementing it, performance-wise - at least not up to Rails 3.1. SomeModel.last(5) will execute the select statement without a limit, returning all records of SomeModel to Ruby as an array, after which Ruby will pick out the last (5) elements. Efficiency-wise, currently, you want to ...
ASP.NET: HTTP Error 500.19 – Internal Server Error 0x8007000d
...d1a-4027-bee3-3d6a1b5844cc/dd22ca2820fadb57fd5378e1763d27cd/dotnet-hosting-3.1.4-win.exe
Any .net core 3.1 application either angular or mvc application would need this.
Second install it as Administrator
Open cmd as administrator, type iisreset, press enter
So refresh your localhost app
Best r...
sprintf like functionality in Python
..., it is not removed in Python 3. Python 3.0 said it would be deprecated in 3.1 but I believe that never happened. Using format() may be preferable but % formatting still exists. (See mail.python.org/pipermail/python-dev/2009-September/092399.html for some of the reasoning why it was not deprecated)
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How can I trim leading and trailing white space?
...4.7" "3.2" "1.3" "0.2" "setosa"
# 4 "4.6" "3.1" "1.5" "0.2" "setosa"
# 5 "5.0" "3.6" "1.4" "0.2" "setosa"
# 6 "5.4" "3.9" "1.7" "0.4" "setosa"
See also ?print.data.frame for other options.
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Convert Int to String in Swift
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s is now (Swift 3.1) String(describing: x) the older syntax yields compiler error.
– Motti Shneor
Mar 9 '17 at 0:55
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