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How to create a custom string representation for a class object?
...rikoo
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answered Feb 8 '11 at 11:30
Ignacio Vazquez-AbramsIgnacio Vazquez-Abrams
...
Swift variable decorations with “?” (question mark) and “!” (exclamation mark)
...r y: Int? = 2
// The type here is "Implicitly Unwrapped Optional Int"
var z: Int! = 3
Usage:
// you can add x and z
x + z == 4
// ...but not x and y, because y needs to be unwrapped
x + y // error
// to add x and y you need to do:
x + y!
// but you *should* do this:
if let y_val = y {
x +...
Using %f with strftime() in Python to get microseconds
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answered Jul 13 '11 at 10:53
adamnfishadamnfish
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Printing Lists as Tabular Data
...eams_list) + 1)
print(row_format.format("", *teams_list))
for team, row in zip(teams_list, data):
print(row_format.format(team, *row))
This relies on str.format() and the Format Specification Mini-Language.
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Reading/parsing Excel (xls) files with Python
... taleinattaleinat
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How do I find all installed packages that depend on a given package in NPM?
... depend on contextify you can run:
npm ls contextify
app-name@0.0.1 /home/zorbash/some-project
└─┬ d3@3.3.6
└─┬ jsdom@0.5.7
└── contextify@0.1.15
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How to insert an item into an array at a specific index (JavaScript)?
... edited Apr 24 '18 at 11:03
Zze
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answered Feb 25 '09 at 14:32
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Can't find a “not equal” css attribute selector
...mpt
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What's the difference between lists enclosed by square brackets and parentheses in Python?
.... For example:
>>> x = (1,2)
>>> y = [1,2]
>>> z = {}
>>> z[x] = 3
>>> z
{(1, 2): 3}
>>> z[y] = 4
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unhashable type: 'list'
Note that, as many peop...
Best way to store date/time in mongodb
...find()
{ "_id" : ObjectId("..."), "date" : ISODate("2014-02-10T10:50:42.389Z") }
{ "_id" : ObjectId("..."), "date" : ISODate("2014-02-10T10:50:57.240Z") }
The native type supports a whole range of useful methods out of the box, which you can use in your map-reduce jobs, for example.
If you need t...