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How to read a large file - line by line?
...Processes=32 --balanceFactor=2
2367496
real 0m8.920s
user 1m30.056s
sys 2m38.744s
In [1]: 40412077758. / 8.92
Out[1]: 4530501990.807175
That’s some 4.5 GB/s, or 45 Gb/s, file slurping speed. That ain’t no spinning hard disk, my friend. That’s actually a Samsung Pro 950 SSD.
Below ...
Convert a positive number to negative in C#
You can convert a negative number to positive like this:
22 Answers
22
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Lua string to int
How can I convert a string to an integer in Lua?
12 Answers
12
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How do I convert from int to Long in Java?
I keep finding both on here and Google people having troubles going from long to int and not the other way around. Yet I'm sure I'm not the only one that has run into this scenario before going from int to Long .
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Drop a temporary table if it exists
...DROP TABLE ##CLIENTS_KEYWORD
CREATE TABLE ##CLIENTS_KEYWORD
(
client_id INT
)
You could also consider truncating the table instead rather than dropping and recreating.
IF OBJECT_ID('tempdb..##CLIENTS_KEYWORD', 'U') IS NOT NULL
TRUNCATE TABLE ##CLIENTS_KEYWORD
ELSE
CREATE TABLE ##CLIENTS_KE...
Add padding on view programmatically
...e other way around: sizeInDp is actually the number of pixels you get when converting sizeInPx dps.
– friederbluemle
Oct 11 '13 at 3:27
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How to convert an NSTimeInterval (seconds) into minutes
...tion
The answer from Brian Ramsay is more convenient if you only want to convert to minutes.
If you want Cocoa API do it for you and convert your NSTimeInterval not only to minutes but also to days, months, week, etc,... I think this is a more generic approach
Use NSCalendar method:
(NSDateCompo...
Fast permutation -> number -> permutation mapping algorithms
...lation w[k-1] = k! is easily proved by induction.)
The number we get from converting our sequence will then be the sum of s[k] * w[k], with k running from 0 to n-1. Here s[k] is the k'th (rightmost, starting at 0) element of the sequence. As an example, take our {1, 2, 0, 1, 0}, with the rightmost ...
How do I check if a number is a palindrome?
...ler problems. When I solved it in Haskell I did exactly what you suggest, convert the number to a String. It's then trivial to check that the string is a pallindrome. If it performs well enough, then why bother making it more complex? Being a pallindrome is a lexical property rather than a mathe...
how to convert from int to char*?
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Also, you need 12 characters to convert a 32-bit integer to a nul-terminated base-10 representation. 10 isn't enough for -2147483647.
– Steve Jessop
Jun 1 '12 at 9:12
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