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How can I ensure that a division of integers is always rounded up?
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UPDATE: This question was the subject of my blog in January 2013. Thanks for the great question!
Getting integer arithmetic correct is hard. As has been demonstrated amply thus far, the moment you try to do a "clever" trick, odds are good that you've made a mistake. And when a flaw ...
MySQL show current connection info
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189
There are MYSQL functions you can use. Like this one that resolves the user:
SELECT USER();
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swift case falling through
...= "hello"
var result = 0
switch testVal {
case "one", "two":
result = 1
default:
result = 3
}
Alternatively, you can use the fallthrough keyword:
var testVal = "hello"
var result = 0
switch testVal {
case "one":
fallthrough
case "two":
result = 1
default:
result = 3
}
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Error: Could not create the Java Virtual Machine Mac OSX Mavericks
I just installed the latest Java SDK 7-67 from Oracle on the Mac 10.9.4. I then ran the command java -v in Terminal and I get this message:
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Difference Between Invoke and DynamicInvoke
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1 Answer
1
Active
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Emulating a do-while loop in Bash
...loop
actions() {
check_if_file_present
# Do other stuff
}
actions #1st execution
while [ current_time <= $cutoff ]; do
actions # Loop execution
done
Or:
while : ; do
actions
[[ current_time <= $cutoff ]] || break
done
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R - Concatenate two dataframes?
...ine adds column b to data frame b.
Results
> a <- data.frame(a=c(0,1,2), b=c(3,4,5), c=c(6,7,8))
> a
a b c
1 0 3 6
2 1 4 7
3 2 5 8
> b <- data.frame(a=c(9,10,11), c=c(12,13,14))
> b
a c
1 9 12
2 10 13
3 11 14
> b$b <- NA
> b
a c b
1 9 12 NA
2 10 13 NA
3 11 1...
Why switch is faster than if
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111
Because there are special bytecodes that allow efficient switch statement evaluation when ther...