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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I was recently having a debate about the Dependency Inversion Principle , Inversion of Control and Dependency Injection . In relation to this topic we were debating whether these principles violate one of the pillars of OOP, namely Encapsulation . My understanding of these things is: The Dependency Inversion Principle implies that objects should depend upon abstractions, not concretions - this is the fundamental principle upon which the Inversion of Control pattern and Dependency Injection are implemented. Inversion of Control is a pattern

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: What is the best (idiomatic) way to concatenate Strings in Groovy? Option 1: calculateAccountNumber ( bank , branch , checkDigit , account ) { bank + branch + checkDigit + account } Option 2: calculateAccountNumber ( bank , branch , checkDigit , account ) { "$bank$branch$checkDigit$account" } I've founded an interesting point about this topic in the old Groovy website: Things you can do but better leave undone. As in Java, you can concatenate Strings with the "+" symbol. But Java only needs that one of the two items of a "+"

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I would like to have two rightBarButtonItems on navigation bar. One for Edit and the other for Add. Obviously I can't make it using Interface Builder. Does anybody know how to do it programmatically? Thanks! 回答1: This is now included in iOS 5 and is called rightBarButtonItems, notice the plural Here is the text from the apple docs : rightBarButtonItems An array of custom bar button items to display on the right side of the navigation bar when the receiver is the top navigation item. @property(nonatomic, copy) NSArray *rightBarButtonItems

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: The following code has a static method, Foo() , calling an instance method, Bar() : public sealed class Example { int count; public static void Foo( dynamic x ) { Bar(x); } void Bar( dynamic x ) { count++; } } It compiles without error* but generates a runtime binder exception at runtime. Removing the dynamic parameter to these methods causes a compiler error, as expected. So why does having a dynamic parameter allow the code to be compiled? ReSharper doesn't show it as an error either. Edit 1: *in Visual Studio 2008 Edit 2: added sealed

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Example project: http://cl.ly/0O2t051o081p I want to achieve a slide-out sidebar as described in this question where the status bar moves as well. I've got everything working and the sidebar slides, but as soon as I try to hide the status bar with to complete the "illusion" it stops anything from happening at all and the sidebar no longer slides out. Here's my code: - (void)viewDidAppear:(BOOL)animated { double delayInSeconds = 1.0; dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC)); dispatch

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to write a script which will display a busy indication while performing the task. And when the task is over, the progress bar will fill to the end showing that 100% task has been completed. I just want the progress bar to show a task is going on.But when I start the task, busy indication stops.It seems to me that the indication and the task can not continue together. Please help me. Here's mycode: from PyQt4 import QtCore, QtGui from time import sleep try: _fromUtf8 = QtCore.QString.fromUtf8 except AttributeError: def _fromUtf8(s)

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: This question already has an answer here: vary the color of each bar in bargraph using particular value 2 answers Supposely, I have the bar chart as below: Any ideas on how to set different colors for each carrier? As for example, AK would be Red, GA would be Green, etc? I am using Pandas and matplotlib in Python >>> f = plt . figure () >>> ax = f . add_subplot ( 1 , 1 , 1 ) >>> ax . bar ([ 1 , 2 , 3 , 4 ], [ 1 , 2 , 3 , 4 ]) >>> ax . get_children () [ , , , , , , , , , , , ] >>> ax . get_children ()[ 2 ]. set_color ( 'r' ) #You

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: My XML looks like this: <foo> <bar name="a"> <baz name="xyz"> <time>2</time> <date>3</date> </baz> </bar> <bar name="b"> <baz name="xyz"> <time>2</time> <date>3</date> </baz> </bar> <bar name="c"> <baz name="xyz"> <time>2</time> <date>3</date> </baz> </bar> </foo> I am writing an XSL that needs to function like this: If all the baz children are same then doSomething else doSomethingElse . My current node is foo . I am new to XSLT and I am aware of the conditionals in XSL. It looks something like this as of now: <xsl:template match="foo">

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Possibly a simple one! Does anyone know how to get the scroll bar of a UIScrollView to constantly show? It displays when the user is scrolling, so they can see what position of the scroll view they are in. BUT I would like it to constantly show because it is not immediately obvious to the user that scrolling is available Any advice would be highly appreciated. 回答1: No, you can't make them always show, but you can make them temporarily flash. [myScrollView flashScrollIndicators]; They are scroll indicators, not scroll bars. You can't use them

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: This question is different from the one at makefiles - compile all c files at once in the sense that I have one extra requirement: I want to redirect all the object files in a separate directory. Here is the setup: I have multiple sources in a directory say src/mylib . I want the objects files to end up in build/mylib . Please note also that under mylib there are subdirectories. The first attempt was as follows: sources = $(shell find src/ -name ".c") objects_dirs = $(subst src/, build/, $(dir $(sources)) # This variable is used by the build