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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: Is there a way in Cocoa to receive a notification (or something similar) when the menu bar becomes hidden or visible? I tried looking around and have not found any information on this topic. Thanks 回答1: I solved this by using Carbon's menu event handlers. I registered for events kEventMenuBarHidden and kEventMenuBarShown under the class kEventClassMenu . 回答2: Optionally watch out for (Cocoa) notifications for an object of class NSStatusBarWindow and notifications like NSWindowDidChangeOcclusionStateNotification NSWindowWillCloseNotification

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 am struggling with how crossScalaVersions works with subprojects. I have a project that compiles with 2.10 (foo) and a project that compiles with 2.11 (bar). They share a cross compiled project (common). How can I compile projects foo and bar? build.sbt lazy val root = (project in file(".")).aggregate(foo, bar).settings( crossScalaVersions := Seq("2.10.4", "2.11.4") ) lazy val foo = (project in file("foo")).dependsOn(common).settings( crossScalaVersions := Seq("2.10.4"), scalaVersion := "2.10.4" ) lazy val bar = (project in file("bar"))

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 have declared the following types: type ExampleA = { a: string; } type ExampleB = { b: number; } type ExampleC = { c: boolean; } type Examples = ExampleA & ExampleB & ExampleC; Then I use the type as follows: function foo(pattern: { [key: string]: string }) { console.log(pattern); } const bar: Examples = { a: 'foo', b: 1, c: false }; foo(bar); The typescript compiler is not throwing any error in the invocation of the foo(bar) method, even though bar:Examples variable doesn't match the function signature of foo . Playground link Why is

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: Ok so there are a number of questions like this but after having experimented with the code in some of the answers given to other similar questions, I'm still stuck! I've managed to get 2 flex rows working in a flex column, with the brand image vertically centered, but I'm having trouble with the horizontal spacing. On the first row of my navbar I have a list of nav-items and also an inline form with a search bar. I want the search bar to be right aligned, while the nav-items stay left aligned. I've tried using justify-content-between on

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: Often I get hard to debug infinite recursions when coding ruby. Is there a way to get a backtrace out of a SystemStackError to find out, where exactly the infinite loop occurs? Example Given some methods foo , bar and baz which call each other in a loop: def foo bar end def bar baz end def baz foo end foo When I run this code, I just get the message test.rb:6: stack level too deep (SystemStackError) . It would be useful to get at least the last 100 lines of the stack, so I could immediately see this is a loop between foo , bar and baz , like

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 have access to WebOperationContext and can add one cookie by doing this: WebOperationContext.Current.OutgoingResponse.Headers.Add("Set-Cookie: foo_a=bar_a"); However if I call that several times, e.g.: WebOperationContext.Current.OutgoingResponse.Headers.Add("Set-Cookie: foo_a=bar_a"); WebOperationContext.Current.OutgoingResponse.Headers.Add("Set-Cookie: foo_b=bar_b"); I should get the following in my header (2 cookies): Set-Cookie: foo_a=bar_a Set-Cookie: foo_b=bar_b But instead get: Set-Cookie: foo_a=bar_a, foo_b=bar_b How do I set

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 have a rich text box which serves as a log. The log automatically scrolls itself down when a new message is appended, which is good. The only problem is when the user wants to view something in the log from before; if a new message is appended, the box automatically scrolls all the way down and prevents the user from seeing anything. I would like to be able to check if the rich text box is scrolled all the way down, and if it isn't not scroll down. Currently I can get the scroll position in the virtual text space (SendMessage with EM

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 have a bar graph which retrieves its y values from a dict. Instead of showing several graphs with all the different values and me having to close every single one, I need it to update values on the same graph. Is there a solution for this? 回答1: Here is an example of how you can animate a bar plot. You call plt.bar only once, save the return value rects , and then call rect.set_height to modify the bar plot. Calling fig.canvas.draw() updates the figure. import matplotlib matplotlib.use('TKAgg') import matplotlib.pyplot as plt import numpy

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 am creating a DC.JS based dashboard, but would like to figure out how to hide all of the text on the y axis of the bar chart as well as style the text on the x axis. Thanks 回答1: You should decrease ticks to zero: yourChart.yAxis().ticks(0); Note that this does not return a reference to your chart, so you cannot chain this method. You must put it on a separate line. Like this: var yourChart = dc.barChart('#your-chart').width(1024).height(50); yourChart.yAxis().ticks(0); 回答2: you should decrease ticks for axis yourChart.yAxis().ticks(0);

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: Is it possible to do partial string formatting with the advanced string formatting methods, similar to the string template safe_substitute() function? For example: s = '{foo} {bar}' s.format(foo='FOO') #Problem: raises KeyError 'bar' 回答1: You can trick it into partial formatting by overwriting the mapping: import string class FormatDict(dict): def __missing__(self, key): return "{" + key + "}" s = '{foo} {bar}' formatter = string.Formatter() mapping = FormatDict(foo='FOO') print(formatter.vformat(s, (), mapping)) printing FOO {bar} Of course