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C# Float expression: strange behavior when casting the result float to int
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First of all, I assume that you know that 6.2f * 10 is not exactly 62 due to floating point rounding (it's actually the value 61.99999809265137 when expressed as a double) and that your question is only about why two seemingly identical computations result in the wro...
Associativity of “in” in Python?
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3 BUILD_LIST 0
6 DUP_TOP
7 ROT_THREE
8 COMPARE_OP 6 (in)
11 JUMP_IF_FALSE 8 (to 22) #if first comparison is wrong
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Is there a javadoc tag for documenting generic type parameters?
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answered Jan 6 '10 at 20:30
Timo WillemsenTimo Willemsen
8,24188 gold badges4545 silver badges7676 bronze badges
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How do I make a list of data frames?
...'re working in:
d1 <- data.frame(y1 <- c(1, 2, 3), y2 <- c(4, 5, 6))
y1
# [1] 1 2 3
y2
# [1] 4 5 6
This won't have the seemingly desired effect of creating column names in the data frame:
d1
# y1....c.1..2..3. y2....c.4..5..6.
# 1 1 4
# 2 2...
Regex not operator
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edited Sep 6 '11 at 17:22
ikegami
308k1414 gold badges212212 silver badges451451 bronze badges
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Calculate difference between two datetimes in MySQL
...L function. For example, you can use:
SELECT TIMESTAMPDIFF(SECOND, '2012-06-06 13:13:55', '2012-06-06 15:20:18')
In your case, the third parameter of TIMSTAMPDIFF function would be the current login time (NOW()). Second parameter would be the last login time, which is already in the database.
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Will ConfigurationManager.AppSettings[“blah”] throw an exception if “blah” doesn't exist?
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6 Answers
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How can you sort an array without mutating the original array?
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