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Why all the Active Record hate? [closed]
...it's ugly, but for the cases where you just plain and simply need to write raw SQL, it's easily done.
@Tim Sullivan
...and you select several instances of the model, you're basically doing a "select * from ..."
Code:
people = Person.find(:all, :select=>'name, id')
This will only sel...
What does the JSLint error 'body of a for in should be wrapped in an if statement' mean?
... for in to iterate over arrays because the language does not garauntee the order in which for in will enumerate over an array. It might not be in numeric order. In addition, if you use the `for(i=0;i<array.length;i++) style construct, you can be sure that you're only iterating numeric indexes in ...
Does Redis persist data?
... unmatched performance and no real loss in case of a crash. But processing orders/purchase histories and so on is considered a job for traditional databases.
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sqlite database default time value 'now'
...
,datetime(created_at, 'unixepoch', 'localtime') as localtime
from example
order by id
;
id|data|epoch |utc |localtime
1 |foo |1412097842|2014-09-30 17:24:02|2014-09-30 20:24:02
2 |bar |1412097842|2014-09-30 17:24:02|2014-09-30 20:24:02
Localtime is correct as I'm located at UT...
How do you remove duplicates from a list whilst preserving order?
... a built-in that removes duplicates from list in Python, whilst preserving order? I know that I can use a set to remove duplicates, but that destroys the original order. I also know that I can roll my own like this:
...
Redirect all output to file [duplicate]
...both stdout and stderr, you have to write the redirections in the opposite order from what works for files, cmd1 2>&1 | cmd2; putting the 2>&1 after the | will redirect stderr for cmd2 instead. If both stdout and stderr are redirected, a program can still access the terminal (if any) ...
Why shouldn't all functions be async by default?
...ntil after N().)
Now imagine that this property of no longer knowing what order side effects happen in applies to every piece of code in your program except those that the optimizer manages to de-async-ify. Basically you have no clue anymore which expressions will be evaluate in what order, which ...
When to use %r instead of %s in Python? [duplicate]
...
Use the %r for debugging, since it displays the "raw" data of the variable,
but the others are used for displaying to users.
That's how %r formatting works; it prints it the way you wrote it (or close to it). It's the "raw" format for debugging. Here \n used to display to...
Unsafe JavaScript attempt to access frame with URL
...ts = file_get_contents($url);
echo $contents;
The HTML
<iframe frameborder="1" id="frametest" src="/remoteInclude.php?url=REMOTE_URL_HERE"></iframe>
<script>
$("#frametest").load(function (){
var contents =$("#frametest").contents();
});
...