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Count number of objects in list [closed]
...'s put some stuff in it - 3 components/indexes/tags (whatever you want to call it) each with differing amounts of elements:
> mylist <- list(record1=c(1:10),record2=c(1:5),record3=c(1:2))
If you are interested in just the number of components in a list use:
> length(mylist)
[1] 3
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How to get commit history for just one branch?
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Before Git 2.1 (August 2014), this mistake: git log -3master.. would actually show you the last 3 commits of the current branch (here my_experiment), ignoring the master limit (meaning if my_experiment contains only one commit, 3 would still be listed, 2 of them from master)
See commit e3fa568 by...
Do you need to close meta and link tags in HTML?
...ed by the tag close symbol > (if we ignore certain SGML rules that nominally apply in non-XHTML HTML but were never implemented in browsers).
What you mean to ask is whether the elements need to be closed by end tags. The answer is that non-XHTML HTML (including HTML5 in HTML serialization), no ...
How do I find if a string starts with another string in Ruby?
...egex is far superior for case insensitive searches, even if you calculated all the permutations of cases for the test string ahead of time.
– Peter P.
Apr 2 '15 at 23:03
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Unable to load SOS in WinDbg
...command. I.e.
.loadby sos clr
Also, if you're on 64 bit, you should install the 32 bit version of Debugging Tools for Windows as well in order to debug 32 bit apps. They install side-by-side, so there's no problem in having both the 32 bit and the 64 bit version on the same machine.
I would adv...
What is the difference between sed and awk? [closed]
...s (in addition to pattern matching and address matching). There are essentially only two "variables": pattern space and hold space. Readability of scripts can be difficult. Mathematical operations are extraordinarily awkward at best.
There are various versions of sed with different levels of suppor...
Is there a “standard” format for command line/shell help text?
If not, is there a de facto standard? Basically I'm writing a command line help text like so:
8 Answers
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Git: Ignore tracked files
I have some tracked files in a repository which are automatically modified when building the code. I don't want to untrack them, I just don't want them to appear as modified and I don't want them to be staged when I git add.
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Case in Select Statement
...imple CASE expression
Within a SELECT statement, a simple CASE expression allows for only an equality check; no other comparisons are made. The following example uses the CASE expression to change the display of product line categories to make them more understandable.
USE AdventureWorks2012;
GO
S...
What is the C# equivalent of friend? [duplicate]
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Interesting note, in VB.NET Internal is still called Friend.
– Jeff
Oct 17 '13 at 19:55
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