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How to write the Fibonacci Sequence?
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Try to do, by hand, an example of input-output of your program (with a short range). Try then to figure out where your program is wrong. Try to convert the "by-hand method" in code. This is for exercise, to learn. I could put down two l...
How to git-svn clone the last n revisions from a Subversion repository?
...already discovered the simplest way to specify a shallow clone in Git-SVN, by specifying the SVN revision number that you want to start your clone at ( -r$REV:HEAD).
For example: git svn clone -s -r1450:HEAD some/svn/repo
Git's data structure is based on pointers in a directed acyclic graph (DAG...
Why does ASP.NET webforms need the Runat=“Server” attribute?
...otential issue of namespace collisions among tags and future enhancements. By requiring the <runat="server"> attribute, this is negated.
It continues:
If <runat=client> was required for all client-side tags, the parser would need to parse all tags and strip out the <runat=client...
JSLint: was used before it was defined
...tain a comma separated list of names. Each name can optionally be followed by a colon and either true or false, true indicating that the variable may be assigned to by this file, and false indicating that assignment is not allowed (which is the default). The directive respects function scope.
S...
Instance variables vs. class variables in Python
...e special constructs addressing specific use cases, else it's code created by an aberrant programmer wanting to show off they know some obscure corner of Python programming.
Alex mentions in his reply that access will be (a little bit) faster due to one less level of lookup... let me further clarif...
unique object identifier in javascript
...for..in loop. This is a well documented practice and one that is enforced by jslint
– Justin Johnson
Jan 4 '10 at 23:01
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To switch from vertical split to horizontal split fast in Vim
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Ctrl-w followed by H, J, K or L (capital) will move the current window to the far left, bottom, top or right respectively like normal cursor navigation.
The lower case equivalents move focus instead of moving the window.
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Split delimited strings in a column and insert as new rows [duplicate]
... 4 f
10 . .
Update 2017: note the separate_rows function as described by @Tif below.
It works so much better, and it allows to "unnest" multiple columns in a single statement:
> head(mydf)
geneid chrom start end strand length gene_count
ENSG00000223972.5 chr1;chr1;chr1...
presentViewController:animated:YES view will not appear until user taps again
... your code this issue won't surface because the runloop will be kept alive by these sources. I've found the issue by using a UITableViewCell which had its selectionStyle set to UITableViewCellSelectionStyleNone, so that no selection animation triggered the runloop after the row selection handler ran...
Using jquery to get element's position relative to viewport
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It is incredible this method was added by IE5... when something is good, is good!
– roy riojas
Mar 9 '13 at 8:51
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