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Real World Example of the Strategy Pattern
... answered Jan 16 '14 at 14:57
Céryl WiltinkCéryl Wiltink
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PowerShell: Store Entire Text File Contents in Variable
...answered Mar 26 '15 at 12:14
KapéKapé
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How to get the current date/time in Java [duplicate]
...ght is a new day in Paris France while still being “yesterday” in Montréal Québec.
Instant
Much of your business logic and data storage/exchange should be done in UTC, as a best practice.
To get the current moment in UTC with a resolution in nanoseconds, use Instant class. Conventional com...
Determine the number of NA values in a column
... In counting amount of arbitrary value, other than NA is writing a boolean function is.value and then using sum(is.value(df$col)) the way to go or is there a more concise direct syntax for this?
– user3274289
Jun 4 '14 at 2:11
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Getting the first index of an object
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Just for fun this works in JS 1.8.5
var obj = {a: 1, b: 2, c: 3};
Object.keys(obj)[0]; // "a"
This matches the same order that you would see doing
for (o in obj) { ... }
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How do I extract text that lies between parentheses (round brackets)?
...e (sales)", @"\(([^)]*)\)").Groups[1].Value
As a response to the (very funny) comment, here's the same Regex with some explanation:
\( # Escaped parenthesis, means "starts with a '(' character"
( # Parentheses in a regex mean "put (capture) the stuff
# ...
How to check whether a file is empty or not?
...size() and stat() will throw an exception if the file does not exist. This function will return True/False without throwing (simpler but less robust):
import os
def is_non_zero_file(fpath):
return os.path.isfile(fpath) and os.path.getsize(fpath) > 0
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SyntaxError: Non-ASCII character '\xa3' in file when function returns '£'
...nswered Nov 6 '13 at 9:29
Timothée HENRYTimothée HENRY
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App Inventor 2 试验组件 · App Inventor 2 中文网
...用 隐私策略和使用条款 技术支持 service@fun123.cn
What is meant by Resource Acquisition is Initialization (RAII)?
... answered Feb 23 '10 at 20:39
Péter TörökPéter Török
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