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How do I convert struct System.Byte byte[] to a System.IO.Stream object in C#?
...
This is the best answer. It's concise and covers all the practical applications. There's a gotcha with just using the byte array based constructor as indicated here--the resulting stream is not re-sizable.
– Jduv
Jul 19 '12 ...
MySQL's now() +1 day
...() + INTERVAL 1 DAY
If you are only interested in the date, not the date and time then you can use CURDATE instead of NOW:
CURDATE() + INTERVAL 1 DAY
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Where are the PostgreSQL logs on macOS?
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SELECT
*
FROM
pg_settings
WHERE
category IN( 'Reporting and Logging / Where to Log' , 'File Locations')
ORDER BY
category,
name;
In my case, it's in "/Library/PostgreSQL/8.4/data/pg_log"
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Create an empty data.frame
...hout any rows. Basically, I want to specify the data types for each column and name them, but not have any rows created as a result.
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Is PHP's count() function O(1) or O(n) for arrays?
...unt the all the elements of a PHP array, or is this value cached somewhere and just gets retrieved?
3 Answers
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Omit rows containing specific column of NA
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You could use the complete.cases 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...
What is the syntax for a default constructor for a generic class?
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And if you need the Type as a property:
public class Cell<T>
{
public Cell()
{
TheType = typeof(T);
}
public Type TheType { get;}
}
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Add a space (“ ”) after an element using :after
...e 'white-space' property does not generate any
anonymous inline boxes.
And from The 'white-space' processing model,
If a space (U+0020) at the end of a line has 'white-space' set to
'normal', 'nowrap', or 'pre-line', it is also removed.
Solution
So if you don't want the space to be remo...
Formatting a number with leading zeros in PHP [duplicate]
... of what wtf8_decode said; Negative numbers would not have leading zeros, and they are not positive numbers. i.e. 08 would be written as such as a date, or something which expects a positive double digit number (Bank Account sort code etc). Please correct me if I'm wrong, but as far as I know, the...
Python function as a function argument?
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Here's another way using *args (and also optionally), **kwargs:
def a(x, y):
print x, y
def b(other, function, *args, **kwargs):
function(*args, **kwargs)
print other
b('world', a, 'hello', 'dude')
Output
hello dude
world
Note that function, *...