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Bulk insert with SQLAlchemy ORM
...tly, we can produce an INSERT that is
competitive with using the raw database API directly.
Alternatively, the SQLAlchemy ORM offers the Bulk Operations suite of
methods, which provide hooks into subsections of the unit of work
process in order to emit Core-level INSERT and UPDATE constru...
Distributed sequence number generation?
...d service, i.e. you make a network call to get a unique ID;
which produces 64 bit unique IDs that are ordered by generation time;
and the service is highly scalable and (potentially) highly available; each instance can generate many thousand IDs per second, and you can run multiple instances on your...
What are the First and Second Level caches in Hibernate?
...an object is
returned by the query, at that time no need to go for a database
transaction. In this way the second level cache works. Here we can use
query level cache also.
Quoted from: http://javabeat.net/introduction-to-hibernate-caching/
...
Calc of max, or max of calc in CSS
...
I posted a solution demonstrating @GertSønderby's comment is indeed the correct solution.
– SherylHohman
Apr 9 '19 at 15:08
...
Allowing interaction with a UIView under another UIView
...ining all this in more detail, along with a small working xcode project to demo the ideas, available here:
http://bynomial.com/blog/?p=74
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Compare double to zero using epsilon
...
Assuming 64-bit IEEE double, there is a 52-bit mantissa and 11-bit exponent. Let's break it to bits:
1.0000 00000000 00000000 00000000 00000000 00000000 00000000 × 2^0 = 1
The smallest representable number greater than 1:
1.0000 ...
range() for floats
...nswer over the accepted one, because the first two solutions presented are based on iterating over integers and deriving the final floats from the integers. This is more robust. If you do it directly with floats, you risk having strange one-off errors due to how floats are represented internally. Fo...
Where are Docker images stored on the host machine?
...
648
The contents of the /var/lib/docker directory vary depending on the driver Docker is using for...
jquery get all form elements: input, textarea & select
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JQuery serialize function makes it pretty easy to get all form elements.
Demo: http://jsfiddle.net/55xnJ/2/
$("form").serialize(); //get all form elements at once
//result would be like this:
single=Single&multiple=Multiple&multiple=Multiple3&check=check2&radio=radio1
...
AngularJS : The correct way of binding to a service properties
...
self.data.variable = newValue;
// let's update the database too to reflect changes in data-model !
self.updateDatabaseWithNewData(data);
},
enumerable: true,
configurable: true
});
Now in our controller if we do
$scope.hello = HelloService;
$scope.hello.pro...