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How do I undo 'git add' before commit?
...t be worth it to recover several hours of work but also a lesson to commit more often...)
– Peter Schneider
Jul 31 '17 at 14:03
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Rails 3: Get Random Record
...xamples will work. But using order RANDOM is quite slow for big tables but more sql-style
UPD. You can use the following trick on an indexed column (PostgreSQL syntax):
select *
from my_table
where id >= trunc(
random() * (select max(id) from my_table) + 1
)
order by id
limit 1;
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How to make the window full screen with Javascript (stretching all over the screen)
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288
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All possible array initialization syntaxes
...one he thinks is faster? Race your horses. You want to know which one is more "efficient"? First create a measurable standard for efficiency; remember, efficiency is value produced per unit cost, so define your value and cost carefully. Then write the code both ways and measure its efficiency. Us...
Better way to check if a Path is a File or a Directory?
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256
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How do I convert a String to an int in Java?
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703
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What does bundle exec rake mean?
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156
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How does one unit test routes with Express?
...exploring this).
Edit
Here's a tiny example, inline. See the gist for a more detailed example.
/// usercontroller.js
var UserController = {
_database: null,
setDatabase: function(db) { this._database = db; },
findUserByEmail: function(email, callback) {
this._database.collection...
What does the “assert” keyword do? [duplicate]
... performance. I don't see it really used as argument variable checking but more deeper into code where various variables can be checked. Like ' did we do 4 or 5 loops where only 4 was expected under all conditions.
– R. van Twisk
Feb 22 '14 at 23:55
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Dump a NumPy array into a csv file
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147
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