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Apply a function to every row of a matrix or a data frame
...hat has the same number of rows, you can predefine it and use the object[] form as illustrated (otherwise the returned value will be simplified to a vector):
bvnormdens <- function(x=c(0,0),mu=c(0,0), sigma=c(1,1), rho=0){
exp(-1/(2*(1-rho^2))*(x[1]^2/sigma[1]^2+
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Save the console.log in Chrome to a file
... won't expand objects - it'll still print large objects in their truncated form, e.g. {a: 1, b: 2, c: 3, ...}.
– Galen Long
Oct 24 '18 at 17:26
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Yellow fade effect with JQuery
...l.outerWidth()) and .height(el.outerHeight()) to highlight the whole of my form fields.
– Mark B
Jul 5 '13 at 14:56
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Break when a value changes using the Visual Studio debugger
...can connect a "callback" to the property and put a breakpoint inside. The form that I describe needs the memory address, if you have no way of know it, there is to search other methods.
– momboco
Mar 15 '11 at 15:12
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python list in sql query as parameter
...and b='snow' and stored it in a tuple with the name got=['a,b'] and did performed the same query. Doing this I got the erroy i.e. Type Error: not all arguments converted during string formatting. How am I supposed to solbe it
– TechJhola
Jan 9 '15 at 19:55
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How can I put strings in an array, split by new line?
...indows separator is tested first.
– AndresRohrAtlasInformatik
Feb 14 at 10:56
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Null check in an enhanced for loop
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I don't think I'd actually do that though - I'd usually use your second form. In particular, the "or throw ex" is important - if it really shouldn't be null, you should definitely throw an exception. You know that something has gone wrong, but you don't know the extent of the damage. Abort early....
Why cast unused return values to void?
... &&y || z);
static_cast<volatile void>( m | n + fn());
All forms are valid. I usually make it shorter as:
//suppressing expressions
(void)(unusedVar);
(void)(fn());
(void)(x &&y || z);
Its also okay.
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Regular expression to match standard 10 digit phone number
...expression for a standard US type phone number that supports the following formats:
20 Answers
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Add default value of datetime field in SQL Server to a timestamp
I've got a table that collects forms submitted from our website, but for some reason, when they created the table, they didn't put a timestamp in the table. I want it to enter the exact date and time that the record was entered.
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