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Create numpy matrix filled with NaNs
...mport numpy as np; a = np.empty((100,100));" "a.fill(np.nan)"
10000 loops, best of 3: 54.3 usec per loop
$ python -mtimeit "import numpy as np; a = np.empty((100,100));" "a[:] = np.nan"
10000 loops, best of 3: 88.8 usec per loop
The timings show a preference for ndarray.fill(..) as the faster alt...
How to sort Map values by key in Java?
...an element will go from O(1) to O(Log(N)).
In a HashMap, moving from 1000 items to 10,000 doesn't really affect your time to lookup an element, but for a TreeMap the lookup time will be about 3 times slower (assuming Log2). Moving from 1000 to 100,000 will be about 6 times slower for every element...
Update statement with inner join on Oracle
... Just a point here, if your key (trg.rowid or src.rid) has one duplicated item this clause throw an error: ora-30926.ora-code.com
– Henrique
Apr 25 '16 at 12:25
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Best practices for overriding isEqual: and hash
... In my opinion this answer doesn't respond to the actual question (best practices for overriding NSObject's hash). It just provides one particular hash algorithm. On top of that, the sparsity of the explanation makes it difficult to understand without deep knowledge on the matter, and can r...
Disable/enable an input with jQuery?
...r .attr() methods is that you can set the property for a bunch of selected items.
Note: In 1.6 there is a .removeProp() method that sounds a lot like removeAttr(), but it SHOULD NOT BE USED on native properties like 'disabled' Excerpt from the documentation:
Note: Do not use this method to r...
What's NSLocalizedString equivalent in Swift?
...lly easy by just highlighting text, right-clicking, and selecting the menu item.
– Ethan Allen
May 11 at 0:14
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Is it possible to add dynamically named properties to JavaScript object?
... had to add some property to a jQuery UI object to keep track of a list of items. In that case, the property was lost if added this way because jQuery always creates a copy. Here you need to use jQuery.extend().
– Matt
Jul 7 '17 at 11:03
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Best way to display decimal without trailing zeroes
... precision should fix that problem. So for formatting decimals, G29 is the best bet.
decimal test = 20.5000m;
test.ToString("G"); // outputs 20.5000 like the documentation says it should
test.ToString("G29"); // outputs 20.5 which is exactly what we want
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No identities were available - administrator request
...l in XCODE the selection is needed to do in project where the provisioning item needs to be selected. thanks for your help.
– Nasenbaer
Jun 28 '12 at 22:13
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Best way to stress test a website [duplicate]
This may be the wrong question to ask but, what's the best way to replicate a large load on an asp.net web application? Is there an easy way to simulate many requests on particular pages? Or is the best thing to use a profiler to track a single request and then work out from that if the performance ...