Comments (2)
Modified by scoder on 23 Aug 2013 17:54 UTC
from issues-import-test.
Modified by scoder on 23 Aug 2013 17:54 UTC
Set description to
Python generators have a feature that presents a length hint to interested parties that can take advantage of it, such as "list()". Cython generator expressions should propagate the length hint of the underlying iterator if there is only one "for" loop and no "if" selector predicate. The C-API function to ask for a length hint is _PyObject_LengthHint()
, which is available from Py2.5 on. Generator expressions would then need to provide a .__length_hint__()
special method that returns either a constant result (when known at compile time, e.g. for sliced C arrays), or calls _PyObject_LengthHint()
on the underlying iterator.
This should be easy to do once ticket http://trac.cython.org/ticket/600 is fixed.
from issues-import-test.
Related Issues (20)
- Allow lambda with C functions HOT 3
- Read Cython type declarations from PEP 3107 function annotations
- ScopedExprNode doesn't support closures
- data of numpy masked array is not around
- Errors in circular imports
- Propagate length hint through generator expressions HOT 1
- Comprehension parsing bug HOT 1
- Allow lambda with C functions HOT 3
- Read Cython type declarations from PEP 3107 function annotations
- ScopedExprNode doesn't support closures
- data of numpy masked array is not around
- Errors in circular imports
- Propagate length hint through generator expressions HOT 1
- Comprehension parsing bug HOT 1
- Py2 syntax for looping over implicit tuple not supported HOT 2
- Cython and NumPy record dtypes breaks with NumPy 1.6 HOT 2
- Py2 syntax for looping over implicit tuple not supported HOT 2
- Cython and NumPy record dtypes breaks with NumPy 1.6 HOT 2
- Runtime Compilation of a module [patch] HOT 2
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from issues-import-test.