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R object identification
...letters)
obj <- list(a=1:26, b=letters, c=list(d=1:26, e=letters))
data(cars)
obj <- lm(dist ~ speed, data=cars)
..etc.
If obj is an S3 or S4 object, you can also try methods or showMethods, showClass, etc. Patrick Burns' R Inferno has a pretty good section on this (sec #7).
EDIT: Dirk an...
Check if a method exists
Is there any way I can test if a method exists in Objective-C?
5 Answers
5
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Git: Discard all changes on a diverged local branch
I have a local topic branch that's tracking a remote branch. For the sake of argument, say the commit histories look like this:
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How can I get the font size and font name of a UILabel?
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Does not work. I can write text in it, but the fontName and pointSize is null.
– Tim
Feb 2 '11 at 9:18
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Class constants in python
In python, I want a class to have some "constants" (practically, variables) which will be common in all subclasses. Is there a way to do it with friendly syntax?
Right now I use:
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SELECT INTO using Oracle
...reate a new but empty table then use a WHERE clause with a condition which can never be true:
create table new_table as
select * from old_table
where 1 = 2
/
Remember that CREATE TABLE ... AS SELECT creates only a table with the same projection as the source table. The new table does not have a...
Use logging print the output of pprint
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The solution above didn't quite cut it for me because I'm also using a formatter to add name and levelname when logging. It looks a little untidy:
__main__ : DEBUG : ['aaaaaaaaaaaaaaaaaaaa',
'bbbbbbbbbbbbbbbbbbbb',
'cccccccccccccccccccc',
'dddddddddddddddddddd']
__ma...
List of MSBuild built-in variables
How can I get a list of built-in MSBuild variables?
6 Answers
6
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Hour from DateTime? in 24 hours format
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You can get the desired result with the code below. Two'H' in HH is for 24-hour format.
return fechaHora.Value.ToString("HH:mm");
share
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How to vertical align an inline-block in a line of text?
...unknown width and height. (It'll have a table inside it with content dynamically generated). Further, the inline-block should be placed inside a line of text, such as "my text (BLOCK HERE)". To make it look pretty, I'm trying to make the block be vertically centered in the line . So if the block...