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convert '1' to '0001' in JavaScript [duplicate]
How can I convert convert '1' to '0001' in JavaScript without using any 3rd party libraries. I have done this in php using spritf: $time = sprintf('%04.0f',$time_arr[$i]);
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How to remove gaps between subplots in matplotlib?
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103
You can use gridspec to control the spacing between axes. There's more information here.
imp...
Multiple levels of 'collection.defaultdict' in Python
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edited Sep 12 '19 at 19:45
StevenWernerCS
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answered ...
ORA-12514 TNS:listener does not currently know of service requested in connect descriptor
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217
I had this issue and the fix was to make sure in tnsnames.ora the SERVICE_NAME is a valid servi...
How can I use a file in a command and redirect output to the same file without truncating it?
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14 Answers
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Active
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Order data frame rows according to vector with specific order
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Try match:
df <- data.frame(name=letters[1:4], value=c(rep(TRUE, 2), rep(FALSE, 2)))
target <- c("b", "c", "a", "d")
df[match(target, df$name),]
name value
2 b TRUE
3 c FALSE
1 a TRUE
4 d FALSE
It will work as long as your target contains exact...
Why does the C# compiler go mad on this nested LINQ query?
... machine) and very long time to compile (actually I get IO exception after 10 minutes).
1 Answer
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How to reverse a string in Go?
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In Go1 rune is a builtin type.
func Reverse(s string) string {
runes := []rune(s)
for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
runes[i], runes[j] = runes[j], runes[i]
}
return string(runes)
}
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php: determine where function was called from
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129
You can use debug_backtrace().
Example:
<?php
function epic( $a, $b )
{
fail( $a . '...
How do I calculate the date six months from the current date using the datetime Python module?
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