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round() for float in C++
...r several inputs including 0.49999999999999994. See blog.frama-c.com/index.php?post/2013/05/02/nearbyintf1
– Pascal Cuoq
May 4 '13 at 18:23
10
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Search and replace in bash using regular expressions
...NNNXNNXNNNNXXXXXXNNNNNXXX
Note that the subsequent -e's are processed in order. Also, the g flag for the expression will match all occurrences in the input.
You can also pick your favorite tool using this method, i.e. perl, awk, e.g.:
echo "$MYVAR" | perl -pe 's/[a-zA-Z]/X/g and s/[0-9]/N/g'
...
Linq to Sql: Multiple left outer joins
...be cleaner (you dont need all the into statements):
var query =
from order in dc.Orders
from vendor
in dc.Vendors
.Where(v => v.Id == order.VendorId)
.DefaultIfEmpty()
from status
in dc.Status
.Where(s => s.Id == order.StatusId)
.DefaultI...
__lt__ instead of __cmp__
...
TypeError: Cannot create a consistent method resolution order (MRO) for bases object, ComparableMixin when I try this in Python 3. See the full code at gist.github.com/2696496
– Adam Parkin
May 14 '12 at 20:23
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How to redirect to a 404 in Rails?
I'd like to 'fake' a 404 page in Rails. In PHP, I would just send a header with the error code as such:
11 Answers
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Perform .join on value in array of objects
...ensions. You can do [x.name for x of users] (spec wiki.ecmascript.org/doku.php?id=harmony:array_comprehensions) . Worth mentioning that just like using map/reduce/filter isn't very 'pythonic' the other way probably holds in JavaScript. CoffeeScript is cool with them though coffeescript.org .
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Different types of thread-safe Sets in Java
...only some of them.
Obviously you can use this only if you have some total order on your elements.
This looks like an ideal candidate for high-concurrency situations, for not-too-large sets (because of the O(log n)).
4) For the ConcurrentHashMap (and the Set derived from it): Here most basic option...
Hashing a string with Sha256
...ich you want to do. (Presumably you want to do whichever one your friend's PHP code is doing.)
For ASCII text, Encoding.UTF8 will definitely be suitable. If you're aiming for perfect compatibility with your friend's code, even on non-ASCII inputs, you'd better try a few test cases with non-ASCII ch...
Getting an empty JQuery object
...my case. Maybe I should open a question about it, but I solved it by using PHP instead of jQuery so I can't really dig more into it right now.
– cregox
Mar 2 '11 at 19:02
2
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Django admin: how to sort by one of the custom list_display fields that has no database field
How could I sort Customers, depending on number_of_orders they have?
3 Answers
3
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