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Querying DynamoDB by date
... would want to use a global secondary index on the "CreatedAt" field.
For more on DynamoDB secondary indexes see the secondary index documentation
Original Answer:
DynamoDB does not allow indexed lookups on the range key only. The hash key is required such that the service knows which partition ...
Generating a unique machine id
...ch fields might vary and excluded them. Then over many years I trimmed out more fields that are not constants from machines. Finally, I ended up storing an encrypted copy of the raw data I used as input and made a closeEnough function so that I would accept a non-matching id if it only varied in 2 ...
Design Patterns: Abstract Factory vs Factory Method
...at are related. It is noticeably different than a Factory Method as it has more than one method of types it produces. (This is complicated refer to next diagram for better real-life example).
Example From The .NET Framework
DbFactoriesProvider is a Simple Factory as it has no sub-types. The DbFa...
Is there a way to break a list into columns?
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Interface type check with Typescript
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Placement of the ng-app directive (html vs body)
... it's faster and how much faster it could be, are you able to explain that more or do you have any references that can illustrate this?
– MattDavis
Apr 3 '13 at 18:02
10
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Styling multi-line conditions in 'if' statements? [closed]
... cond4 == 'val4'):
do_something
Also, don't forget the whitespace is more flexible than you might think:
if (
cond1 == 'val1' and cond2 == 'val2' and
cond3 == 'val3' and cond4 == 'val4'
):
do_something
if (cond1 == 'val1' and cond2 == 'val2' and
cond3 == 'v...
How do I assign a port mapping to an existing Docker container?
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I have tried the above and it works. For more details see: mybrainimage.wordpress.com/2017/02/05/…
– rohitmohta
Feb 6 '17 at 1:59
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JavaScript frameworks to build single page applications [closed]
...l seemed pretty happy with how Knockout did view binding. It seemed a lot more complex and harder to get into than Knockout. And it uses a bunch of custom HTML attributes to do bindings, which I'm not sure I like... I may take another look at Angular later, because since I've come across multiple p...
How to overload functions in javascript?
...e properties on an object, there is no specific order. In fact, there are more than 30 different properties that can be passed on that object, only one (the url) is required.
Here's an example:
$.ajax({url: "http://www.example.com/somepath", data: myArgs, dataType: "json"}).then(function(result) ...