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What is the purpose of a question mark after a type (for example: int? myVariable)?
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Thank you for the explanation. I understand now.
– problemofficer
Jul 1 '17 at 3:59
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Why does 1==1==1 return true, “1”==“1”==“1” return true, and “a...
...o being compared to true and is thus also considered to be equal to true.
Now, the "WHY?!?!" question is explained by the fact that Javascript has its roots in the C-family of languages. In which any number, other than 0 is considered to be a valid true boolean. :-/
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How do I type using my keyboard on the iphone simulator?
...eyboard
Command-K Toggle (Show/Hide) Software Keyboard
And, you know, I really suffered for last 2 months, until found it, and it is very convenient now))
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How to split data into training/testing sets using sample function
...eed(101) # Set Seed so that same sample can be reproduced in future also
# Now Selecting 75% of data as sample from total 'n' rows of the data
sample <- sample.int(n = nrow(data), size = floor(.75*nrow(data)), replace = F)
train <- data[sample, ]
test <- data[-sample, ]
By using caTool...
Check if value exists in Postgres array
...ething' = ANY(some_array) can also be used in a WHERE clause. For reasons known only to Crom, I have spent the last four years thinking that I couldn't use array comparators in WHERE clauses. Those days are gone now. (I was dropped on my head as a child, so maybe it's just me).
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How to get last key in an array?
...ings when the function parameter was passed by reference. The warning will now always be issued."
– Dominic Scheirlinck
Jan 18 '16 at 1:05
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how to make a specific text on TextView BOLD
I don't know how to make a specific text on TextView become BOLD.
23 Answers
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Convert float to double without losing precision
...point (for example, 0.1). So you either must always round the result to a known precision or use BigDecimal.
See http://en.wikipedia.org/wiki/Floating_point for more information.
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Creating a range of dates in Python
...e import datetime
list(rrule.rrule(rrule.DAILY,count=100,dtstart=datetime.now()))
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Is it possible to hide the cursor in a webpage using CSS or Javascript?
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To my knowledge IE6 supports transparent PNG, as long as it is real transparency and not alpha channel transparency. If in doubt, check yourself with the test suite: libpng.org/pub/png/pngsuite.html.
– Shi
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