以下是我希望自定义视图显示的布局的XML.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:rs="http://schemas.android.com/apk/res/com.bookcessed.booksearch"
android:id="@+id/widget273"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TextView
android:id="@+id/csp_tv_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Choose Your Source"
android:textSize="40sp"
android:textColor="#ffc83200"
android:gravity="center"
android:paddingTop="15dip"
android:paddingBottom="75dip"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<com.bookcessed.booksearch.SearchProviderButton
android:id="@+id/csp_spb_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_below="@+id/csp_tv_title"
rs:providerName="BOOKP" />
</RelativeLayout>
这是自定义视图的XML:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:rs="http://schemas.android.com/apk/res/com.bookcessed.booksearch"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<RelativeLayout
android:id="@+id/pv_rl_strings"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_alignParentTop="true" >
<TextView
android:id="@+id/pv_tv_search"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search"
android:layout_toRightOf="@+id/pv_tv_and"
android:textSize="18sp"
android:textColor="#ff11ab37"
android:layout_alignParentTop="true" />
<TextView
android:id="@+id/pv_tv_and"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" and "
android:textSize="18sp"
android:paddingLeft="6dip"
android:paddingRight="6dip"
android:textColor="#ff000000"
android:layout_centerHorizontal="true" />
<TextView
android:id="@+id/pv_tv_browse"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Browse" …(我使用的是python 2.7)python文档表明你可以将映射传递给内置的dict,它会将该映射复制到新的dict中:
http://docs.python.org/library/stdtypes.html#mapping-types-dict
我有一个实现Mapping ABC的类,但它失败了:
import collections
class Mapping(object):
def __init__(self, dict={}): self.dict=dict
def __iter__(self): return iter(self.dict)
def __iter__(self): return iter(self.dict)
def __len__(self): return len(self.dict)
def __contains__(self, value): return value in self.dict
def __getitem__(self, name): return self.dict[name]
m=Mapping({5:5})
dict(m)
# Traceback (most recent call last):
# File "<stdin>", line 1, in <module>
# TypeError: cannot convert dictionary update sequence element #0 to a sequence
collections.Mapping.register(Mapping)
dict(m)
# Traceback (most recent call last):
# File "<stdin>", line 1, in <module>
# …我有这样的一套:
keep = set(generic_drugs_mapping[drug] for drug in drug_input)
如何[0,1,2,3,4,5,6,7,8,9,10]在此集合中添加值？
我正在尝试安装Bundler,这样我就可以将我的Sinatra应用程序部署到具有所有正确宝石的服务器上.
我已经创建了我的Gemfile
source :gemcutter
gem 'sinatra', '1.0'
gem "nokogiri", "1.4.2"
gem "rack", "1.1.0"
gem "dm-core", "1.0.0"
gem "dm-migrations", "1.0.0"
gem "dm-sqlite-adapter", "1.0.0"
gem "pony", "1.0"
接下来我创建了一个Config.ru
require 'rubygems'
require 'bundler'
Bundler.setup
require 'sinatra'
require 'dm-core'
require 'dm-migrations'
require 'dm-sqlite-adapter'
require 'open-uri'
require 'nokogiri'
require 'csv'
require 'pony'
require 'parsedate'
require 'digest/md5'
require 'MyApp'
run MyApp
到目前为止一直很好,所以接下来我跑了bundle install并且得到了'Bundle Complete'所以现在我需要做的只是Rackup
然后我得到:
config.ru:18: undefined local variable or method `MyApp' for #<Rack::Builder:0x1227350 @ins=[]> (NameError)
from /usr/local/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/builder.rb:46:in `instance_eval'
from /usr/local/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/builder.rb:46:in `initialize'
from …我正在尝试构建一个解释用户输入文本,搜索引擎样式的语法.它将支持AND,OR,NOT和ANDNOT布尔运算符.我几乎所有工作都有效,但是我想添加一个规则,即在带引号的字符串之外的两个相邻关键字被隐含地视为AND子句.例如:
奶酪和饼干=奶酪和饼干
(上下)或(左和右)=(上下)或(左和右)
猫狗"大肚猪"=猫与狗和"大肚猪"
我遇到了最后一个问题,我希望有人可以指出我正确的方向.到目前为止,这是我的*.g文件,请保持良好,我的ANTLR体验不到一个工作日:
grammar SearchEngine;
options { language = CSharp2; output = AST; }
@lexer::namespace { Demo.SearchEngine }
@parser::namespace { Demo.SearchEngine }
LPARENTHESIS : '(';
RPARENTHESIS : ')';
AND : ('A'|'a')('N'|'n')('D'|'d');
OR : ('O'|'o')('R'|'r');
ANDNOT : ('A'|'a')('N'|'n')('D'|'d')('N'|'n')('O'|'o')('T'|'t');
NOT : ('N'|'n')('O'|'o')('T'|'t');
fragment CHARACTER : ('a'..'z'|'A'..'Z'|'0'..'9');
fragment QUOTE : ('"');
fragment SPACE : (' '|'\n'|'\r'|'\t'|'\u000C');
WS : (SPACE) { $channel=HIDDEN; };
PHRASE : (QUOTE)(CHARACTER)+((SPACE)+(CHARACTER)+)+(QUOTE);
WORD : (CHARACTER)+;
startExpression : andExpression;
andExpression : andnotExpression (AND^ andnotExpression)*;
andnotExpression : orExpression (ANDNOT^ orExpression)*; …在C#中,可以readonly通过不定义set函数来定义getter函数,如下所示:
private int _id;
public int Id
{
get { return _id; }
// no setter defined
}
在VB.NET中
Private _id as Integer
Public Readonly Property Id() As Integer
Get
Return _id
End Get
End Property
是否有可能readonly像在VB .NET中那样标记这样的函数,以便更加冗长？
我有一个YAML文件,我正在使用它作为一种配置文件.它是这样的,
tests:
- category: some_category
test:
- name: hello
key1: value1
key2: value2
- name: hithere
key1: value1
key2: value2
我想做这样的事情:
for all tests as test:
print test.name + test.key1
我看过JYaml和SnakeYaml但他们似乎只是从YAML映射到Java对象.YAML不适合这个吗？有没有一种简单的方法来实现这一目标？我需要的是迭代并获取每个的值,类似于DOM遍历.
我不想最终有82个功能分支,所以我想知道一旦我将它合并到master就删除功能分支的潜在缺点是什么.
工作流程:
git co -b feat-xyz
hack hack
git ci
hack some more
git ci
git co master
git merge feat-xyz
smoke test
git br -d feat-xyz
这里有什么问题？
b保存csv文件的内容
我需要经历b的每一行; 但是,因为它有一个标题,我不想注意标题.我怎么从第二行开始？
for row in b (starting from the second row!!):