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How to check whether a pandas DataFrame is empty?
... In Python, try/except is cheap and if is expensive. Python is neither Java nor C; here it's Easier to Ask Forgiveness than Permission
– Nick Marinakis
Apr 14 at 1:26
add ...
What is the most appropriate way to store user settings in Android application
... API level 8 (2.2) and later. You can use iharder.sourceforge.net/current/java/base64 or something else for earlier OSs.
– emmby
Jun 20 '11 at 22:19
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Is JavaScript guaranteed to be single-threaded?
JavaScript is known to be single-threaded in all modern browser implementations, but is that specified in any standard or is it just by tradition? Is it totally safe to assume that JavaScript is always single-threaded?
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Python Infinity - Any caveats?
...te 4: be careful to rely on any of the above, as Python relies on the C or Java library it was compiled for and not all underlying systems implement all this behavior correctly. If you want to be sure, test for infinity prior to doing your calculations.
¹) Recently means since version 3.2.
²) Flo...
Arrays, heap and stack and value types
...about reference and value types. This is something probably every .NET and Java developer struggled with.
An array is just a list of values. If it's an array of a reference type (say a string[]) then the array is a list of references to various string objects on the heap, as a reference is the val...
REST API 404: Bad URI, or Missing Resource?
...CTED ERRORS, BETTER IF YOU DO NOT SEE IT IN THE LOG");
}
BUT, because my Java or JavaScript client can receive two kind of HTTP 404 somehow I need to check the body of the response in case of HTTP 404. If I can parse the response body then I am sure I got back a response where there was no data to...
Domain Driven Design: Domain Service, Application Service
...the difference between an Application Service and a Domain Service was the java implementation of Eric Evans' cargo example, found here. If you donwload it, you can check out the internals of RoutingService (a Domain Service) and the BookingService, CargoInspectionService (which are Application Serv...
How can bcrypt have built-in salts?
...put of the function so that they are remembered later on (according to the Java implementation of bcrypt). Put another way, the "hash" generated by bcrypt is not just the hash. Rather, it is the hash and the salt concatenated.
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What Makes a Good Unit Test? [closed]
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Let me begin by plugging sources - Pragmatic Unit Testing in Java with JUnit (There's a version with C#-Nunit too.. but I have this one.. its agnostic for the most part. Recommended.)
Good Tests should be A TRIP (The acronymn isn't sticky enough - I have a printout of the cheatsheet i...
Rolling median algorithm in C
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How can I find Java version of this solution?
– Hengameh
Jul 14 '15 at 9:49
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