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On design patterns: When should I use the singleton?
...751 Yes it is, until it suddenly is not any more, it took a lot of work to transform Javas Language singleton into something that could support internationalized websites. I have found that using the singleton as a parameter is often a reasonable compromise, by retrieving the singleton instance in t...
How to store a dataframe using Pandas
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@geekazoid In case the data needs to be transformed after loading (i.e. string/object to datetime64) this would need to be done again after loading a saved csv, resulting in performance loss. pickle saves the dataframe in it's current state thus the data and its fo...
Python decorators in classes
... showing you this code snippet because this is what your decorator snippet transforms into.
So, as you can see, accessing the instance in a decorator like that isn't really possible since decorators are applied during the definition of whatever function/method they are attached to and not during in...
Get all unique values in a JavaScript array (remove duplicates)
...r of Set takes an iterable object, like Array, and the spread operator ... transform the set back into an Array. Thanks to Lukas Liese for hint in comment.
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How to check if a file is a valid image file?
...orming the image manipulation (and I think that flip is one of the cheaper transformations).
With this code you are going to verify a set of images at about 10 MBytes/sec with standard Pillow or 40 MBytes/sec with Pillow-SIMD module (modern 2.5Ghz x86_64 CPU).
For the other formats psd,xcf,.. you c...
Difference between CSS3 transitions' ease-in and ease-out
... to produce the illusion of motion. With a steps(8) animation and a rotate transform, you’re using motion to produce the illusion of separate frames! How fun.
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How to execute XPath one-liners from shell?
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You should try these tools :
xmlstarlet : can edit, select, transform... Not installed by default, xpath1
xmllint : often installed by default with libxml2-utils, xpath1 (check my wrapper to have --xpath switch on very old releases and newlines delimited output (v < 2.9.9)
xpath : ...
What is Virtual DOM?
... what will become real elements (this is step 1). Then that output will be transformed into real HTML, which is what gets displayed in the browser (This is step 2).
So why go through all this to generate a virtual DOM?
Simple answer — This is what allows react to be fast. It does this by mean...
What's the best way to store a group of constants that my program uses? [closed]
...y if these settings come from AppSettings and you change them using config transformations because the settings are environment specific.
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Best way to encode text data for XML in Java?
...it the "right way". If you dislike it, then parse it afterwards, identity transform it, and print it.
– Thorbjørn Ravn Andersen
May 19 '10 at 7:56
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