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Is the order of elements in a JSON list preserved?
...rded passage in ecma-international.org/publications/files/ECMA-ST/ECMA-404.pdf 'The JSON syntax does not define any specific meaning to the ordering of the values. However, the JSON array structure is often used in situations where there is some semantics to the ordering. '
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Determine Whether Two Date Ranges Overlap
...se operations in Snodgrass's Developing Time-Oriented Applications in SQL (PDF available online at URL), and in Date, Darwen and Lorentzos Temporal Data and the Relational Model (2002) or Time and Relational Theory: Temporal Databases in the Relational Model and SQL (2014; effectively the second ed...
Mapping two integers to one, in a unique and deterministic way
... -> N mapping. These are used for e.g. dovetailing. Have a look at this PDF for an introduction to so-called pairing functions. Wikipedia introduces a specific pairing function, namely the Cantor pairing function:
Three remarks:
As others have made clear, if you plan to implement a pairing f...
How to free memory in Java?
...s by relying on the garbage collector.
This memory management whitepaper (PDF) may help explain what's going on.
You can also call System.gc() to suggest that the garbage collector run immediately. However, the Java Runtime makes the final decision, not your code.
According to the Java documenta...
Is MonoTouch now banned on the iPhone? [closed]
...://adcdownload.apple.com/iphone/iphone_sdk_3.2__final/iphone_sdk_agreement.pdf
Even though that's the case (and was actually the case since 2.x, apple doesn't have any problem accepting applications that do exactly that. For example, ALL EA games use Lua scripts, and lots and lots of people use ex...
Can someone give an example of cosine similarity, in a very simple, graphical way?
...alization and TF-IDF: site.uottawa.ca/~diana/csi4107/cosine_tf_idf_example.pdf
– Mike B.
Aug 12 '14 at 10:41
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Django - how to create a file and save it to a model's FileField?
...ntentFile) works perfectly with the file string returned by django-wkhtmltopdf's convert_to_pdf command. Thank you!!
– Nostalg.io
Sep 1 '16 at 4:53
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How to open every file in a folder?
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This opens, prints, closes every PDF in a directory using PyPerClip and PyAutoGui. Hope others find this helpful.
– RockwellS
Jun 8 '18 at 22:09
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How to create a multi-tenant database with shared table structures?
...perforce.com/media/ForcedotcomBookLibrary/Force.com_Multitenancy_WP_101508.pdf
They have 1 huge table w/ 500 string columns (Value0, Value1, ... Value500). Dates and Numbers are stored as strings in a format such that they can be converted to their native types at the database level. There are me...
What is PostgreSQL explain telling me exactly?
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Explaining_EXPLAIN.pdf could help too.
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