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Choosing the default value of an Enum type without having to change values
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13 Answers
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How do you configure logging in Hibernate 4 to use SLF4J
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11 Answers
11
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Pointer arithmetic for void pointer in C
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+100
Final conclusion: arithmetic on a void* is illegal in both C and C++.
GCC allows it as an extension, see Arithmetic on void- and Fu...
How can I get the corresponding table header (th) from a table cell (td)?
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136
var $th = $td.closest('tbody').prev('thead').find('> tr > th:eq(' + $td.index() + ')');
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How to convert PascalCase to pascal_case?
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31 Answers
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Omit rows containing specific column of NA
...ses function and put it into a function thusly:
DF <- data.frame(x = c(1, 2, 3), y = c(0, 10, NA), z=c(NA, 33, 22))
completeFun <- function(data, desiredCols) {
completeVec <- complete.cases(data[, desiredCols])
return(data[completeVec, ])
}
completeFun(DF, "y")
# x y z
# 1 1 0 ...
Converting an integer to a hexadecimal string in Ruby
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You can give to_s a base other than 10:
10.to_s(16) #=> "a"
Note that in ruby 2.4 FixNum and BigNum were unified in the Integer class.
If you are using an older ruby check the documentation of FixNum#to_s and BigNum#to_s
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Timeout a command in bash without unnecessary delay
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153
I think this is precisely what you are asking for:
http://www.bashcookbook.com/bashinfo/sourc...
Full examples of using pySerial package [closed]
...he device you are connecting to)
ser = serial.Serial(
port='/dev/ttyUSB1',
baudrate=9600,
parity=serial.PARITY_ODD,
stopbits=serial.STOPBITS_TWO,
bytesize=serial.SEVENBITS
)
ser.isOpen()
print 'Enter your commands below.\r\nInsert "exit" to leave the application.'
input=1
whil...