大约有 30,000 项符合查询结果（耗时：0.0340秒） [XML]
Python extending with - using super() Python 3 vs Python 2
...ore smart,
super()
is enough in most case. You can refer to http://www.python.org/dev/peps/pep-3135/
share
|
improve this answer
|
follow
|
...
In Firebase, is there a way to get the number of children of a node without loading all the node dat
...lue) {
return (current_value || 0) + 1;
});
For more info, see https://www.firebase.com/docs/transactions.html
UPDATE:
Firebase recently released Cloud Functions. With Cloud Functions, you don't need to create your own Server. You can simply write JavaScript functions and upload it to Firebase....
DataSet panel (Report Data) in SSRS designer is gone
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
How do I import other TypeScript files?
..."./ZipCodeValidator";
let myValidator = new ZipCodeValidator();
https://www.typescriptlang.org/docs/handbook/modules.html
Old answer: From TypeScript version 1.5 you can use tsconfig.json: http://www.typescriptlang.org/docs/handbook/tsconfig-json.html
It completely eliminates the need of the co...
Sequelize.js: how to use migrations and sync
... sequelize db:migrate && sequelize db:seed:all && node bin/www",
"start": "sequelize db:migrate && sequelize db:seed:all && node bin/www"
},
...
The only thing I need to do on production server is npm start. This command will run all migrations, apply all seeders ...
How does Apple find dates, times and addresses in emails?
... ago called Apple Data Detectors. You can read more about it here:
http://www.miramontes.com/writing/add-cacm/
Essentially it parses the text and detects patterns that represent specific pieces of data, then applies OS-contextual actions to it. It's neat.
...
Margin while printing html page
...html body element, which is normally controlled by the browser. See http://www.w3.org/TR/1998/REC-CSS2-19980512/page.html.
This currently works in all major browsers except Safari.
In Internet explorer, the margin is actually set to this value in the settings for this printing, and if you do Previe...
CMake output/build directory
...where to compile.
Instead of that use one of predefined variables:
http://www.cmake.org/Wiki/CMake_Useful_Variables
(look for CMAKE_BINARY_DIR and CMAKE_CURRENT_BINARY_DIR)
share
|
improve this ans...
All permutations of a Windows license key
...
http://www.magicaljellybean.com/keyfinder/
The Magical Jelly Bean Keyfinder is a freeware utility that retrieves your Product Key (cd key) used to install windows from your registry. It also has a community-updated configuration...
Objective-C declared @property attributes (nonatomic, copy, strong, weak)
...n.
This is a good website to learn about strong and weak for iOS 5.
http://www.raywenderlich.com/5677/beginning-arc-in-ios-5-part-1
Weak
weak is similar to strong except that it won't increase the reference count by 1. It does not become an owner of that object but just holds a reference to it. If t...