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Check if a Postgres JSON array contains a string
...ovements on a table of 1,000,000 rabbits where each rabbit likes two foods and 10% of them like carrots:
d=# -- Postgres 9.3 solution
d=# explain analyze select info->>'name' from rabbits where exists (
d(# select 1 from json_array_elements(info->'food') as food
d(# where food::text = '"...
Representational state transfer (REST) and Simple Object Access Protocol (SOAP)
Can somebody explain what is REST and what is SOAP in plain english? And how Web Services work?
14 Answers
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AngularJS : automatically detect change in model
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In views with {{}} and/or ng-model, Angular is setting up $watch()es for you behind the scenes.
By default $watch compares by reference. If you set the third parameter to $watch to true, Angular will instead "shallow" watch the object for cha...
Xcode 4: How do you view the console?
...ight in left sidebar). Then choose your Debug/Run session in left sidebar, and you will have console in editor area.
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Copy text to clipboard with iOS
... postfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9....
Initializing a two dimensional std::vector
...std::vector::vector(count, value) constructor that accepts an initial size and a default value:
std::vector<std::vector<int> > fog(
A_NUMBER,
std::vector<int>(OTHER_NUMBER)); // Defaults to zero initial value
If a value other than zero, say 4 for example, was required to...
how to convert an RGB image to numpy array?
... answered Oct 15 '11 at 8:02
Andrey KamaevAndrey Kamaev
27.2k66 gold badges8282 silver badges8484 bronze badges
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File content into unix variable with newlines
... newlines are replaced with spaces is not entirely to do with the echo command, rather it's a combination of things.
When given a command line, bash splits it into words according to the documentation for the IFS variable:
IFS: The Internal Field Separator that is used for word splitting after ...
Why seal a class?
...ealing a class? I cannot fathom how not allowing inheritance can be useful and most likely not the only one fighting these classes.
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How can I check MySQL engine type for a specific table?
...ntains several tables using different storage engines
(specifically myisam and innodb). How can I find out which tables are
using which engine?
...