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SparseArray vs HashMap
...replace HashMap when the key is a primitive type.
There are some variants for different key/value types, even though not all of them are publicly available.
Benefits are:
Allocation-free
No boxing
Drawbacks:
Generally slower, not indicated for large collections
They won't work in a non-Androi...
How to create byte array from HttpPostedFile
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Work like a charm. Thank you for this simple solution (with the comments of jeff, Spongeboy and Chris)!
– David
Jun 9 '10 at 14:59
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How do I delete all messages from a single queue using the CLI?
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rabbitmqadmin is the perfect tool for this
rabbitmqadmin purge queue name=name_of_the_queue_to_be_purged
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Static way to get 'Context' in Android?
...dited Nov 15 '15 at 7:28
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
answered Feb 25 '11 at 6:37
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Python string class like StringBuilder in C#?
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There is no one-to-one correlation. For a really good article please see Efficient String Concatenation in Python:
Building long strings in the Python
progamming language can sometimes
result in very slow running code. In
this article I i...
How to clone a Date object?
...ate();
var copiedDate = new Date(date);
...but I'm not sure whether this works in other browsers. (It seems to work in IE8).
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Replacement for deprecated -sizeWithFont:constrainedToSize:lineBreakMode: in iOS 7?
...ze
options:NSStringDrawingUsesLineFragmentOrigin
attributes:@{NSFontAttributeName:FONT}
context:nil];
CGSize size = textRect.size;
Just change "FONT" for an "[UIFont font....]"
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Why does javascript map function return undefined?
...u actually want to filter the array, which a map function is not suitable for.
What you actually want is a filter function. It takes a function that returns true or false based on whether you want the item in the resulting array or not.
var arr = ['a','b',1];
var results = arr.filter(function(ite...
Error to use a section registered as allowDefinition='MachineToApplication' beyond application level
The top line in all of my aspx pages in my /portal/ directory has this error message, and I know it's a common one. I have googled this error message to no end, and I see a lot of posts telling me to configure the /portal/ folder as an application in IIS (which I have), and more posts telling me I ...
Deleting a Google App Engine application
...the new Google Cloud console, you can still disable GAE applications as before (App Engine --> Settings --> Disable). They cannot currently be deleted. However you can delete the entire project by going to IAM --> Settings --> Shut Down. This button is in the header and a bit tricky to...