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How to check if object property exists with a variable holding the property name?
I am checking for the existence of an object property with a variable holding the property name in question.
6 Answers
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How do I install the yaml package for Python?
...ou could try the search feature in pip,
$ pip search yaml
which looks for packages in PyPI with yaml in the short description. That reveals various packages, including PyYaml, yamltools, and PySyck, among others (Note that PySyck docs recommend using PyYaml, since syck is out of date). Now you...
AngularJS : How to watch service variables?
...ou want to avoid the tyranny and overhead of $watch.
In the service:
factory('aService', function() {
var observerCallbacks = [];
//register an observer
this.registerObserverCallback = function(callback){
observerCallbacks.push(callback);
};
//call this when you know 'foo' has been...
Debugging Scala code with simple-build-tool (sbt) and IntelliJ
...umentation from "RunningSbt" from sbt's google code site lists commands for running the main class for a project or the tests, but there seem to be no commands for debugging.
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How to set variables in HIVE scripts
I'm looking for the SQL equivalent of SET varname = value in Hive QL
9 Answers
9
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Does JSON syntax allow duplicate keys in an object?
...ther standards will refer to this one, strictly adhering to the JSON text format, while
imposing restrictions on various encoding details. Such standards may require specific behaviours. JSON
itself specifies no behaviour.
Further down in the standard (p. 2), the specification for a JSON ob...
How do you detect the clearing of a “search” HTML5 input?
...ybe others). Is there a way to detect when this X is clicked in Javascript or jQuery other than, say, detecting when the box is clicked at all or doing some sort of location click-detecting (x-position/y-position)?
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How to create streams from string in Node.Js?
I am using a library, ya-csv , that expects either a file or a stream as input, but I have a string.
11 Answers
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'Java' is not recognized as an internal or external command
...check the current version of Java in which I am running, I received the error "java is not recognized as an internal or external command, operable program or batch file.".
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Most underused data visualization [closed]
...really agree with the other posters: Tufte's books are fantastic and well worth reading.
First, I would point you to a very nice tutorial on ggplot2 and ggobi from "Looking at Data" earlier this year. Beyond that I would just highlight one visualization from R, and two graphics packages (which a...