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Get Image size WITHOUT loading image into memory

...cstring for .open says: def open(fp, mode="r"): "Open an image file, without loading the raster data" There are a few file operations in the source like: ... prefix = fp.read(16) ... fp.seek(0) ... but these hardly constitute reading the whole file. In fact .open simply returns a file...
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jQuery UI Dialog - missing close icon

...cause you are calling bootstrap in, after you are calling jquery-ui in. Literally, swap the two so that instead of: <script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script> <script src="js/bootstrap.min.js"></script> it becomes <script src="js/bootstrap....
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Unable to launch the IIS Express Web server, Failed to register URL, Access is denied

...matic ones. I'm using Visual Studio 2013 on Windows 7. I think I'm running it as administrator, the window title says PROJECT NAME - Microsoft Visual Studio (Administrator) . ...
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Get the length of a String

... As of Swift 4+ It's just: test1.count for reasons. (Thanks to Martin R) As of Swift 2: With Swift 2, Apple has changed global functions to protocol extensions, extensions that match any type conforming to a protocol. Thus the new synt...
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How do I use a custom Serializer with Jackson?

... good way. But if you don't mind a custom serializer, there's no need to write one for Item but rather one for User -- if so, it'd be as simple as: public void serialize(Item value, JsonGenerator jgen, SerializerProvider provider) throws IOException, JsonProcessingException { jgen.writeNu...
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Find XOR of all numbers in a given range

... This is a pretty clever solution -- it exploits the fact that there is a pattern of results in the running XORs. The f() function calculates the XOR total run from [0, a]. Take a look at this table for 4-bit numbers: 0000 <- 0 [a] 0001 <- 1 [1] 0010 &l...
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How to query as GROUP BY in django?

...follow | edited Feb 17 '17 at 14:47 jb. 19k1515 gold badges8585 silver badges129129 bronze badges ...
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Regular expression to check if password is “8 characters including 1 uppercase letter, 1 special cha

...d a nightmare to maintain especially for people who are not that familiar with regular expressions. I think it would be easier to break your regex down and do it one bit at a time. It might take a bit more to do, but I am pretty sure that maintaining it and debugging it would be easier. This would ...
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What is a “cache-friendly” code?

...e other end of the memory spectrum (DRAM), the memory is very cheap (i.e. literally millions of times cheaper) but takes hundreds of cycles after a request to receive the data. To bridge this gap between super fast and expensive and super slow and cheap are the cache memories, named L1, L2, L3 in d...
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How to initialize HashSet values by construction?

I need to create a Set with initial values. 23 Answers 23 ...