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How do I find the duplicates in a list and create another list with them?
...yields [1, 2, 5]
Just in case speed matters, here are some timings:
# file: test.py
import collections
def thg435(l):
return [x for x, y in collections.Counter(l).items() if y > 1]
def moooeeeep(l):
seen = set()
seen_add = seen.add
# adds all elements it doesn't know yet to...
How to read contacts on Android 2.0
...name="android.permission.READ_CONTACTS"/>
to your AndroidManifest.xml file, then you can loop through your phone contacts like this:
Cursor cursor = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI,null, null, null, null);
while (cursor.moveToNext()) {
String contactId = ...
使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网
...fun！），有一个 App Inventor 扩展，它提供了一个带有 TaifunFile.copy 操作的组件 TaifunFile。可以从此处下载扩展。您应该在构建 Expeditions 和 Virtuality 演示之前安装扩展。有关如何使用 App Inventor 扩展，请参阅 App Inventor 扩展文档。
...
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
...xtension module _euler12.pyx, which I import and call from a normal python file. The _euler12.pyx is essentially the same as your version, with some additional static type declarations. The setup.py has the normal boilerplate to build the extension, using python setup.py build_ext --inplace.
# _eul...
Optional Parameters with C++ Macros
...that debugging via trace output gets quite a bit easier with things like __FILE__ and __LINE__ and such...
– Christian Severin
Mar 25 '15 at 14:21
...
Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
...alue to be available via writeback to the permanent/architectural register file.
– Peter Cordes
Mar 31 at 19:29
@Peter...
How to generate JAXB classes from XSD?
.../xs:sequence>
</xs:complexType>
</xs:schema>
Run .bat file with parameters: generate.bat test-scheme.xsd -d [your src dir]
For more info use this documentation - http://docs.oracle.com/javaee/5/tutorial/doc/bnazg.html
and this - http://docs.oracle.com/javase/6/docs/technotes/...
Open new Terminal Tab from command line (Mac OS X)
...as a workaround (see example above).
Source code (paste into your bash profile, for instance):
# Opens a new tab in the current Terminal window and optionally executes a command.
# When invoked via a function named 'newwin', opens a new Terminal *window* instead.
function newtab {
# If this f...
How does Access-Control-Allow-Origin header work?
...s header for POST and GET requests. I had accidently opened the index.html file directly from disk, so the URL the client was accessing on node.js was thought to be cross-domain, while it was simply running on localhost. Accessing via the URL (as one would usually do) "solved" my issue...
...
How do I test an AngularJS service with Jasmine?
...ed implicitly instead of explicitly. You'll notice in my example spec test file below, the beforeEach() block implicitly calls injector to make things available to be assigned inside of the tests.
Going back to grouping things and using before-blocks, here's a small example. I'm making a Cat Servic...