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Is List a subclass of List? Why are Java generics not implicitly polymorphic?
...al to it safely, but you don't know anything about what might be retrieved from it, because it could be a List<Object>.
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Ruby/Rails: converting a Date to a UNIX timestamp
How would I get a UNIX timestamp (number of seconds since 1970 GMT) from a Date object in a Rails app?
5 Answers
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Web API 最佳入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... self.remove = function (product) {
// First remove from the server, then from the UI
$.ajax({ type: "DELETE", url: baseUri + '/' + product.Id })
.done(function () { self.products.remove(product); });
}
$.getJSON(baseUr...
In Python, how can you load YAML mappings as OrderedDicts?
...ortunately, the solution can be improved without much effort:
import yaml
from collections import OrderedDict
def ordered_load(stream, Loader=yaml.Loader, object_pairs_hook=OrderedDict):
class OrderedLoader(Loader):
pass
def construct_mapping(loader, node):
loader.flatten_m...
Transport endpoint is not connected
...
I get this error from the sshfs command from Fedora 17 linux to debian linux on the Mindstorms EV3 brick over the LAN and through a wireless connection.
Bash command:
el@defiant /mnt $ sshfs root@192.168.13.102:/root -p 22 /mnt/ev3
fuse: ba...
How do I set up DNS for an apex domain (no www) pointing to a Heroku app?
...le.com) you can use CNAME records pointing to your-app-name.herokuapp.com. From there on, Heroku manages the dynamic A records behind your-app-name.herokuapp.com so that they're always up-to-date. Unfortunately, the DNS specification does not allow CNAME records on the zone apex (the base domain). (...
GitHub Windows client behind proxy
...entication, but only problem is with cloning, pulling and pushing projects from and into GitHub. It seems like the problem is with git implementation. I was able to configure git to run through our proxy without putting my credentials in the git global settings and it was asking for my credentials w...
Creating a simple XML file using python
...r the implementation in the Python standard library
Introductory Tutorial (From the original author's site)
LXML etree tutorial. (With example code for loading the best available option from all major ElementTree implementations)
As a final note, either cElementTree or LXML should be fast enough f...
sqlalchemy flush() and get inserted id?
... You just saved my ass. I don't think I will ever use the ORM again coming from Django. The flush() command does NOT work as documented IMHO.
– Marc
May 8 '16 at 21:20
2
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How to automatically install Ansible Galaxy roles?
... you require, using any of a variety of install methods:
# Install a role from the Ansible Galaxy
- src: dfarrell07.opendaylight
# Install a role from GitHub
- name: opendaylight
src: https://github.com/dfarrell07/ansible-opendaylight
# Install a role from a specific git branch
- name: opendayl...