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Skip rows during csv import pandas
I'm trying to import a .csv file using pandas.read_csv() , however I don't want to import the 2nd row of the data file (the row with index = 1 for 0-indexing).
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How do I include related model fields using Django Rest Framework?
...ed the answer to explain why depth wouldn't do what you need in this case, and to explain the exception you're seeing and how to deal with it.
– Tom Christie
Jan 29 '13 at 13:20
1
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How to serialize Joda DateTime with Jackson JSON processor?
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This has become very easy with Jackson 2.0 and the Joda module.
ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(new JodaModule());
Maven dependency:
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactI...
How do I prevent the modification of a private field in a class?
... strangely not! My solution would also be to use the list from the outside and wrap the array as follows:
String[] arr = new String[]{"1", "2"};
public List<String> getList() {
return Collections.unmodifiableList(Arrays.asList(arr));
}
The problem with copying the array is: if you're d...
Reload the path in PowerShell
If I have an instance of PowerShell ISE running and I install something that modifies the PATH or I modify it in any way outside of PowerShell then I need to restart PowerShell for it to see the updated PATH variable.
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How to format a JavaScript date
...eFormat object (which is part of the
ECMAScript Internationalization API), and then manually create a string
with the delimiters you want.
To do this, you can use DateTimeFormat#formatToParts. You could
destructure the array, but that is not ideal, as the array output depends on the
locale:
// e...
What does map(&:name) mean in Ruby?
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It's shorthand for tags.map(&:name.to_proc).join(' ')
If foo is an object with a to_proc method, then you can pass it to a method as &foo, which will call foo.to_proc and use that as the method's block.
The Symbol#to_proc meth...
Print number of keys in Redis
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You can issue the INFO command, which returns information and statistics about the server. See here for an example output.
As mentioned in the comments by mVChr, you can use info keyspace directly on the redis-cli.
redis> INFO
# Server
redis_version...
map function for objects (instead of arrays)
...For that matter I wanted to add another solution that returns a new object and leaves the original object as it is:
var myObject = { 'a': 1, 'b': 2, 'c': 3 };
// returns a new object with the values at each key mapped using mapFn(value)
function objectMap(object, mapFn) {
return Object.k...
Completion handler for UINavigationController “pushViewController:animated”?
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See par's answer for another and more up to date solution
UINavigationController animations are run with CoreAnimation, so it would make sense to encapsulate the code within CATransaction and thus set a completion block.
Swift:
For swift I suggest cr...