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Is if(items != null) superfluous before foreach(T item in items)?
...can matter. For most code we should choose the idiomatic code. But the two allocations you mentioned will be a performance problem in even fewer cases.
– CodesInChaos
Jun 23 '11 at 15:22
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Is it possible to decrypt MD5 hashes?
...e to (e.g. to authenticate with another system which doesn't have anything token-based).
– Jon Skeet
Sep 24 '09 at 13:33
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Biggest GWT Pitfalls? [closed]
...marking. You'll have to roll your own (although it has support for History tokens, which is a start). This happens with all AJAX toolkits AFAIK.
IMHO, GWT is missing a framework that has out of the box support for all of the issues mentioned on this 'thread'.
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in a “using” block is a SqlConnection closed on return or exception?
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Using generates a try / finally around the object being allocated and calls Dispose() for you.
It saves you the hassle of manually creating the try / finally block and calling Dispose()
share
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How do I count the number of occurrences of a char in a String?
...rs are huge difference, but percetage wise...it adds up. Avoid the memory allocations - use a loop!
– Ben
Nov 18 '14 at 15:41
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show 12 mor...
Splitting string into multiple rows in Oracle
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Be aware that comma_to_table() only works with tokens which fit Oracle's database object naming conventions. It will hurl on a string like '123,456,789' for instance.
– APC
Jan 23 '18 at 7:09
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HTML character decoding in Objective-C / Cocoa Touch
...};
NSAttributedString *decodedString;
decodedString = [[NSAttributedString alloc] initWithData:stringData
options:options
documentAttributes:NULL
error:NULL];
T...
How to set default values in Rails?
... method. That blog post's discussion about ActiveRecord directly calling .allocate was about model objects loaded with existing data from the database. (And it's a terrible idea for ActiveRecord to work that way, IMO. But that's beside the point.)
– SFEley
M...
Count the number of occurrences of a character in a string in Javascript
...bar".split("o").length-1
//>2
split not recommended. Resource hungry. Allocates new instances of 'Array' for each match. Don't try that for a >100MB file via FileReader. You can actually easily observe the EXACT resource usage using Chrome's profiler option.
3.
var stringsearch = "o"
,str...
Override devise registrations controller
...ecord::Base
# Include default devise modules. Others available are:
# :token_authenticatable, :confirmable, :lockable and :timeoutable
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable
has_many :owned_organizations, :class_name =>...