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Convert Data URI to File then append to FormData
...t works with WebKit browsers. Part of the task is to extract an image file from the canvas object and append it to a FormData object for upload.
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getActivity() returns null in Fragment function
...s. The onAttach call is where the Fragment is attached to its activity and from this point getActivity() will return non-null (nb there is also an onDetach() call).
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How to change root logging level programmatically for logback
...rinciple of particular library take precedence over its simplicity? Coming from a Python world, I fail to understand why something as simple as Logging is so complicated in Java/Scala.
– Abhinandan Dubey
Jan 15 '19 at 16:04
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OS X Bash, 'watch' command
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This watch from brew doesn't seem to read the user aliases. When executing watch somealias, I get a command not found.
– RNickMcCandless
Mar 31 '16 at 19:21
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Download multiple files with a single action
...part message format. But browsers don't portably parse multipart responses from the server side, but technically there's nothing difficult with doing this.
– CMCDragonkai
Jul 27 '18 at 4:25
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Preview an image before it is uploaded
.... The most efficient way would be to use URL.createObjectURL() on the File from your <input>. Pass this URL to img.src to tell the browser to load the provided image.
Here's an example:
<input type="file" accept="image/*" onchange="loadFile(event)">
<img id="output"/>
<...
Java HashMap performance optimization / alternative
... making up a simple example.) If your strings have widely varying lengths, from 1 to 10,000, and are fairly evenly distributed across that range, that this could be a very good hash function. But if your strings are all 1 or 2 characters, this would be a very bad hash function.
Edit: I should add: ...
Compile time string hashing
...absolutely. I tested it against the Python CRC32 runtime algorithm (coming from zlib) and the results are the same. In fact, what you're trying to achieve is exactly why I use this technique for!
– Clement JACOB
Aug 23 '13 at 7:07
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How to check if a word is an English word with Python?
...ibility based on NLTK without enchant is NLTK's words corpus
>>> from nltk.corpus import words
>>> "would" in words.words()
True
>>> "could" in words.words()
True
>>> "should" in words.words()
True
>>> "I" in words.words()
True
>>> "you" in word...
Alternate FizzBuzz Questions [closed]
...ate a remainder (given a numerator and denominator)
Return distinct values from a list including duplicates (i.e. "1 3 5 3 7 3 1 1 5" -> "1 3 5 7")
Return distinct values and their counts (i.e. the list above becomes "1(3) 3(3) 5(2) 7(1)")
Given a string of expressions (only variables, +, and -) ...