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What is the difference between a shim and a polyfill?
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Shim
If you are familiar with the adapter pattern, then you know what a shim is. Shims intercepts API calls and creates an abstract layer between the caller and the target. Typically shims are used for backward compability. For instance the es5-shim npm package will let you write ECMAS...
Kotlin secondary constructor
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Update: Since M11 (0.11.*) Kotlin supports secondary constructors.
For now Kotlin supports only primary constructors (secondary constructors may be supported later).
Most use cases for secondary constructors are solved by one of the techniques below:
Technique 1. (solves your case) Define a fa...
How do I get the last day of a month?
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You can find the last date of any month by this code:
var now = DateTime.Now;
var startOfMonth = new DateTime(now.Year, now.Month, 1);
var DaysInMonth = DateTime.DaysInMonth(now.Year, now.Month);
var lastDay = new DateTime(now.Year, now.Month, DaysInMonth);
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Which timestamp type should I choose in a PostgreSQL database?
...TE TABLE my_tbl (
my_timestamp TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
CHECK(EXTRACT(TIMEZONE FROM my_timestamp) = '0')
);
test=> SET timezone = 'America/Los_Angeles';
SET
test=> INSERT INTO my_tbl (my_timestamp) VALUES (NOW());
ERROR: new row for relation "my_tbl" violates check...
Python strftime - date without leading 0?
...>>> '{dt.year}/{dt.month}/{dt.day}'.format(dt = datetime.datetime.now())
'2013/4/19'
Though perhaps beyond the scope of the original question, for more interesting formats, you can do stuff like:
>>> '{dt:%A} {dt:%B} {dt.day}, {dt.year}'.format(dt=datetime.datetime.now())
'Wedne...
Writing unit tests in Python: How do I start? [closed]
I completed my first proper project in Python and now my task is to write tests for it.
7 Answers
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Best way to create unique token in Rails?
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-- Update --
As of January 9th, 2015. the solution is now implemented in Rails 5 ActiveRecord's secure token implementation.
-- Rails 4 & 3 --
Just for future reference, creating safe random token and ensuring it's uniqueness for the model (when using Ruby 1.9 and ActiveR...
What is the difference between the GNU Makefile variable assignments =, ?=, := and +=?
...bar"
When you use VARIABLE := value, you get the value of value as it is now. For example:
VAL = foo
VARIABLE := $(VAL)
VAL = bar
# VAL will evaluate to "bar", but VARIABLE will evaluate to "foo"
Using VARIABLE ?= val means that you only set the value of VARIABLE if VARIABLE is not set already...
Get hours difference between two dates in Moment Js
...te the difference in number of days between two dates using MomentJS.
var now = moment(new Date()); //todays date
var end = moment("2015-12-1"); // another date
var duration = moment.duration(now.diff(end));
var days = duration.asDays();
console.log(days)
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How to write a Python module/package?
... tasks at work and never really bothered packaging them for others to use. Now I have been assigned to make a Python wrapper for a REST API. I have absolutely no idea on how to start and I need help.
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