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How to count TRUE values in a logical vector
...# gives you 1
length(z[z == TRUE]) # f3lix answer, gives you 2 (because NA indexing returns values)
So I think the safest is to use na.rm = TRUE:
sum(z, na.rm = TRUE) # best way to count TRUE values
(which gives 1). I think that table solution is less efficient (look at the code of table functi...
MySQL InnoDB not releasing disk space after deleting data rows from table
...ma when you introduce the partitioning for your table like - Unique Keys, Indexes to include partition column etc.
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rake db:schema:load vs. migrations
...ema), go through the existing DB structure and add/remove tables, columns, indexes as required.
To me this would be a lot more robust, even if possibly a little slower.
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Postgres: SQL to list table foreign keys
...QL prompt, in addition to showing table column's data types it'll show the indexes and foreign keys.
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Detect If Browser Tab Has Focus
...e all supported on...everything. (see http://www.quirksmode.org/dom/events/index.html )
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Redo merge of just a single file
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This sort of worked for me. The index ended up in a merged state, but mergetool did not think that there were any outstanding merges. I just did the merge using vi, but it was weird anyway.
– Chris Cleeland
Jan 9 '15 ...
String replacement in java, similar to a velocity template
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@asherbar you can use argument index specifiers in the format string, e.g. String.format("Hello! My name is %1$s, I'm %2$s. Why is my name %1$s you ask? Well I'm only %2$s years old so I don't know", name, age)
– jazzpi
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Your branch is ahead of 'origin/master' by 3 commits
...ull and was 5 commits ahead..WTF???? Just needed to fetch to refresh local indexes...all good :)
– Chris Rutledge
Jun 1 at 22:02
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Concat scripts in order with Gulp
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With gulp-useref you can concatenate every script declared in your index file, in the order in which you declare it.
https://www.npmjs.com/package/gulp-useref
var $ = require('gulp-load-plugins')();
gulp.task('jsbuild', function () {
var assets = $.useref.assets({searchPath: '{.tmp,app}...
How do I import CSV file into a MySQL table?
... of TSV files and remove the last line if no header. (hope search crawlers index this).
– Bleeding Fingers
Dec 16 '14 at 0:08
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