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Difference between validate(), revalidate() and invalidate() in Swing GUI
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edited Jun 5 '18 at 10:41
answered Mar 1 '12 at 6:23
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classical inheritance vs prototypal inheritance in javascript
... | John Doe | Real World Entity. |
| 1 | johnDoe | Variable holding object. |
| 2 | Man | Class of object johnDoe. |
| 3 | Human | Superclass of class M...
datetime dtypes in pandas read_csv
...mes using the default date_parser (dateutil.parser.parser)
headers = ['col1', 'col2', 'col3', 'col4']
dtypes = {'col1': 'str', 'col2': 'str', 'col3': 'str', 'col4': 'float'}
parse_dates = ['col1', 'col2']
pd.read_csv(file, sep='\t', header=None, names=headers, dtype=dtypes, parse_dates=parse_dates)...
Java Map equivalent in C#
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184
You can index Dictionary, you didn't need 'get'.
Dictionary<string,string> example = ne...
converting double to integer in java
...losest long to the argument. The result is rounded to an integer by adding 1/2, taking the floor of the result, and casting the result to type long. In other words, the result is equal to the value of the expression:
(long)Math.floor(a + 0.5d)
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Javascript dynamically invoke object method from string
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212
if the name of the property is stored in a variable, use []
foo[method]();
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Looping through localStorage in HTML5 and JavaScript
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144
You can use the key method. localStorage.key(index) returns the indexth key (the order is imp...
Only get hash value using md5sum (without filename)
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15 Answers
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PEP 8, why no spaces around '=' in keyword argument or a default parameter value?
...n a variable assignment.
For example, there is plenty of code like this:
kw1 = some_value
kw2 = some_value
kw3 = some_value
some_func(
1,
2,
kw1=kw1,
kw2=kw2,
kw3=kw3)
As you see, it makes complete sense to assign a variable to a keyword argument named exactly the same, so it im...
Extract part of a regex match
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221
Use ( ) in regexp and group(1) in python to retrieve the captured string (re.search will return ...