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Setting “checked” for a checkbox with jQuery
... performance. To me, coding using a common API makes it more readable than mixing native API and jQuery APIs. I'd stick with jQuery.
– Katie Kilian
May 4 '12 at 16:28
18
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Naming “class” and “id” HTML attributes - dashes vs. underlines [closed]
...
Either example is perfectly valid, you can even throw into the mix ":" or "." as separators according to the w3c spec. I personally use "_" if it is a two word name just because of its similarity to space.
share...
Random record in ActiveRecord
...bility of selection and support for tables with deleted rows. You can even mix it with constraints.
User.where(favorite_day: "Friday").pluck(:id)
And thereby pick a random user who likes fridays rather than just any user.
...
Error type 3 Error: Activity class {} does not exist
...me devices seems to have a problem with uninstall. For me, it is Xiaomi Mi Mix 2 with EU Build. I guess it is a error in Build version of device.
– Opiatefuchs
Feb 16 '18 at 8:56
1...
Can a variable number of arguments be passed to a function?
..." % (k, v)
myfunc(abc=123, efh=456)
# abc = 123
# efh = 456
And you can mix the two:
def myfunc2(*args, **kwargs):
for a in args:
print a
for k,v in kwargs.iteritems():
print "%s = %s" % (k, v)
myfunc2(1, 2, 3, banan=123)
# 1
# 2
# 3
# banan = 123
They must be both declare...
delete vs delete[] operators in C++
...
@DonLarynx the correct difference is that mixing them up results in an ill-formed program. An implementation might know how many objects to destruct, or it might not. It is allowed to know that it was called wrong, and abort the program telling you where the problem ...
Can I extend a class using more than 1 class in PHP?
...y and avoids the typical problems associated with multiple inheritance and Mixins.
They are recognized for their potential in supporting better composition and reuse, hence their integration in newer versions of languages such as Perl 6, Squeak, Scala, Slate and Fortress. Traits have also been port...
Python append() vs. + operator on lists, why do these give different results?
... due to the potential confusion which the Abel's answer above may cause by mixing the discussion of lists, sequences and arrays.
Arrays were added to Python after sequences and lists, as a more efficient way of storing arrays of integral data types. Do not confuse arrays with lists. They are not the...
Why does PostgreSQL perform sequential scan on indexed column?
...ster than an index scan.
This is because an index scan requires several IO operations for each row (look up the row in the index, then retrieve the row from the heap). Whereas a sequential scan only requires a single IO for each row - or even less because a block (page) on the disk contains more...
Tools to search for strings inside files without indexing [closed]
... 1 minute to search a 20GB folder with 26k files, source code and binaries mixed up. 15k files are searched - the rest are likely skipped due to being binary files. Subsequent searches in the same folder are on the order of seconds (until stuff gets evicted form the cache).
The next closest I've f...