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Compare two List objects for equality, ignoring order [duplicate]
...lest solution is to sort before comparing:
Enumerable.SequenceEqual(list1.OrderBy(t => t), list2.OrderBy(t => t))
Edit:
Here is a solution that performs a bit better (about ten times faster), and only requires IEquatable, not IComparable:
public static bool ScrambledEquals<T>(IEnume...
Why is iterating through a large Django QuerySet consuming massive amounts of memory?
...etching large items from database.
import gc
# Get the events in reverse order
eids = Event.objects.order_by("-id").values_list("id", flat=True)
for index, eid in enumerate(eids):
event = Event.object.get(id=eid)
# do necessary work with event
if index % 100 == 0:
gc.collect()
...
Pretty-Print JSON in Java
...st to the org.json alternative, the GSON way of pretty printing keeps the order of the elements intact after transformation.
– Aydin K.
Jul 5 '17 at 13:25
1
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How do I implement basic “Long Polling”?
...00;color:#fff;font-size:.9em; }
.msg{ background:#aaa;padding:.2em; border-bottom:1px #000 solid}
.old{ background-color:#246499;}
.new{ background-color:#3B9957;}
.error{ background-color:#992E36;}
</style>
<script type="text/javascript" charset="utf-8">
...
Sankey Diagrams in R?
...it <- as.data.frame(Titanic)
# 4d
alluvial( tit[,1:4], freq=tit$Freq, border=NA,
hide = tit$Freq < quantile(tit$Freq, .50),
col=ifelse( tit$Class == "3rd" & tit$Sex == "Male", "red", "gray") )
share
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Add a new column to existing table in a migration
...s
All of the commands for making things (controllers, models, migrations etc) have been moved under the make: command.
php artisan migrate is still the same though.
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improve this answer
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Passing Data between View Controllers
...controller creates a new (mutable) dictionary and adds it to the array. In order to fill in the row, the controller creates a detail view controller and gives it the new dictionary. The detail view controller fills in the dictionary and returns. The dictionary is already part of the model, so nothin...
How to replace multiple substrings of a string?
...eplaced with items()
Careful: Python dictionaries don't have a reliable order for iteration. This solution only solves your problem if:
order of replacements is irrelevant
it's ok for a replacement to change the results of previous replacements
For instance:
d = { "cat": "dog", "dog": "pig"...
Sort NSArray of date strings or objects
...s @selector(compare:) as the parameter. The -[NSDate compare:] method will order dates in ascending order for you. This is simpler than creating an NSSortDescriptor, and much simpler than writing your own comparison function. (NSDate objects know how to compare themselves to each other at least as e...
Using @property versus getters and setters
...rk: Python never binds the callable to the object and I need the object in order to call the function. Even creating the decorator in the class doesn't work, as although now we have the class, we still don't have an object to work with.
So we're going to need to be able to do more here. We do kno...