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Fastest way to flatten / un-flatten nested JSON objects
I threw some code together to flatten and un-flatten complex/nested JSON objects. It works, but it's a bit slow (triggers the 'long script' warning).
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What is the difference between `sorted(list)` vs `list.sort()`?
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App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...时才会触发PublishedReceived。
匹配算法基于：https://github.com/iosphere/mosquitto，来源：lib/util_mosq.c，方法：mosquitto_topic_matches_sub。
PublishedByteArrayReceived
当收到的消息的主题（参见SubscribeByteArray）检测到已收到字节数组时，将触发...
Which comment style should I use in batch files?
...h has been quite informative. One thing it showed me was that lines can be commented not just with REM , but also with :: . It says:
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How do I remove code duplication between similar const and non-const member functions?
...r time: the template solution is the only way to avoid duplication and get compiler-checked const-correctness, so personally I would no longer use a const_cast in order to avoid duplicating code, I'd choose between putting the duped code into a function template or else leaving it duped.
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How to use a class from one C# project with another C# project
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In this case you have 3 options: 1) Combine the 2 projects 2) Make the class internal - and add P2 as "InternalsVisibleTo" attribute (more information here: msdn.microsoft.com/en-us/library/…). 3) If none of the above can be done - you will have to use reflec...
Difference between partition key, composite key and clustering key in Cassandra?
...means that it is made by a single column.
But the primary key can also be COMPOSITE (aka COMPOUND), generated from more columns.
create table stackoverflow_composite (
key_part_one text,
key_part_two int,
data text,
PRIMARY KEY(key_part_one, key_part_two)
);
In a...
Are soft deletes a good idea? [duplicate]
...o when you need to add him back? Please don't say "include IsDeleted in a compound primary key".).
In a design review, I would expect the developer to demonstrate an awareness of the costs and benefits and to present an excellent reason for doing soft deletes in this manner. "Why not do it?" is n...
R script line numbers at error?
If I am running a long R script from the command line (R --slave script.R), how can I get it to give line numbers at errors?
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Difference between a theta join, equijoin and natural join
I'm having trouble understanding relational algebra when it comes to theta joins, equijoins and natural joins. Could someone please help me better understand it? If I use the = sign on a theta join is it exactly the same as just using a natural join?
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