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What is a “surrogate pair” in Java?
...ode units are used. Since 16 bits can only contain the range of characters from 0x0 to 0xFFFF, some additional complexity is used to store values above this range (0x10000 to 0x10FFFF). This is done using pairs of code units known as surrogates.
The surrogate code units are in two ranges known as "...
What is the difference between javac and the Eclipse compiler?
...s own compiler called as Eclipse Compiler for Java (ECJ).
It is different from the javac, the compiler that is shipped with Sun JDK. One notable difference is that the Eclipse compiler lets you run code that didn't actually properly compile. If the block of code with the error is never ran, your pr...
ISO time (ISO 8601) in Python
...
Here is what I use to convert to the XSD datetime format:
from datetime import datetime
datetime.now().replace(microsecond=0).isoformat()
# You get your ISO string
I came across this question when looking for the XSD date time format (xs:dateTime). I needed to remove the microseco...
Referring to the null object in Python
...is a built-in constant. As soon as you start Python, it's available to use from everywhere, whether in module, class, or function. NoneType by contrast is not, you'd need to get a reference to it first by querying None for its class.
>>> NoneType
NameError: name 'NoneType' is not defined
&g...
What does curly brackets in the `var { … } = …` statements do?
...tructuring:
Destructuring assignment makes it possible to extract data from arrays or objects using a syntax that mirrors the construction of array and object literals.
...
One particularly useful thing you can do with destructuring assignment is to read an entire structure in a single state...
Where to place and how to read configuration resource files in servlet based application?
...e classpath and/or you intend to be able to override a server-provided one from the webapp on.
2. Put it in webcontent
So that you can load it by ServletContext#getResourceAsStream() with a webcontent-relative path:
InputStream input = getServletContext().getResourceAsStream("/WEB-INF/foo.propertie...
Should I Dispose() DataSet and DataTable?
...pose be called on DataTable and DataSet objects? includes some explanation from an MVP:
The system.data namespace (ADONET) does not contain
unmanaged resources. Therefore there is no need to dispose any of those as
long as you have not added yourself something special to it.
Understanding...
method of iterating over sqlalchemy model's defined columns?
...tely not desirable.
But it is actually much easier because if you inherit from Base, you have a __table__ attribute, so that you can do:
for c in JobStatus.__table__.columns:
print c
for c in JobStatus.__table__.foreign_keys:
print c
See How to discover table properties from SQLAlchemy ...
How to Create Deterministic Guids
...gles the mind that they don't update the RFC in-place with the corrections from the errata. Even a link at the end of the document would be vastly more helpful than relying on the reader to remember to search for errata (hopefully before writing an implementation based on the RFC...).
...
How to launch an Activity from another Application in Android
I want to launch an installed package from my Android application. I assume that it is possible using intents, but I didn't find a way of doing it. Is there a link, where to find the information?
...