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Dictionary vs Object - which is more efficient and why?
...ots__ = ('i', 'l')
def __init__(self, i):
self.i = i
self.l = []
all = {}
for i in range(1000000):
all[i] = Obj(i)
test_obj.py:
class Obj(object):
def __init__(self, i):
self.i = i
self.l = []
all = {}
for i in range(1000000):
all[i] = Obj(i)
test_dict.py:
all = {}
for i in...
How to center buttons in Twitter Bootstrap 3?
...
add to your style:
display: table;
margin: 0 auto;
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Center a position:fixed element
...ock for this to work. (Some other display values might also work, such as table.)
– Brilliand
Jul 19 '13 at 21:00
a b...
Rails: select unique values from a column
...nt a Model object, that would need to be instantiated from a record in the table. But you're not selecting a record just a unique value (from what may be multiple records).
– Benissimo
Jan 9 '15 at 15:34
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Formatting NSDate into particular styles for both year, month, day, and hour, minute, seconds
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iPhone format strings are in Unicode format. Behind the link is a table explaining what all the letters above mean so you can build your own.
And of course don't forget to release your date formatters when you're done with them. The above code leaks format, now, and inFormat.
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Filtering by Multiple Specific Model Properties in AngularJS (in OR relationship)
... values in them, even though they start out blank. If you want to stay on stable releases, go ahead and try this out for your situation, but some scenarios may want to use @maxisam's solution until 1.2.0 is released.
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Does IE9 support console.log, and is it a real function?
...roupEnd', 'info', 'log',
'markTimeline', 'profile', 'profileEnd', 'table', 'time', 'timeEnd',
'timeStamp', 'trace', 'warn'
];
var length = methods.length;
var console = (window.console = window.console || {});
while (length--) {
method = methods[length];
...
Convert JS date time to MySQL datetime
... In most cases storing the UTC may be better, and in either case your data table should probably give location info in one field. Alternatively, to convert to local time is pretty easy: use ... - Date.getTimezoneOffset() * 60 * 1000 (NB also adjusts for Daylight Saving Time where applicable).
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Core Data: Quickest way to delete all instances of an entity
...aking multiple seconds to delete all 4000 entries from just one of several tables. This is too long for the user to wait. Same request directly with sqlite seems instantaneous.
– David
Jul 23 '12 at 4:49
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Variable name as a string in Javascript
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Typically, you would use a hash table for a situation where you want to map a name to some value, and be able to retrieve both.
var obj = { myFirstName: 'John' };
obj.foo = 'Another name';
for(key in obj)
console.log(key + ': ' + obj[key]);
...