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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'm trying to render a block with white text on top of an image in my testing of React Native. But instead i get a black block on top of my image with white text in it. Not what I had expected. How do you render a text block with transparent background? Current result Render function render: function(){ return ( <View style={styles.container}> <Image style={styles.backdrop} source={{uri: 'https://unsplash.com/photos/JWiMShWiF14/download'}}> <Text style={styles.headline}>Headline</Text> </Image> </View> ); ) Stylesheet function var styles =

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 realize this is essentially OSCeption (Operating System Inception), but I think it might make the most sense for me (please tell me if there's a better option, this seems really awful). Here's the situation: I have a windows 8 machine. I like it - it works great for everything but development. For development, I've been using a VMWare virtual machine running Ubuntu. I've dabbled with using Cygwin, but it just didn't feel right. I'm now joining a project where they've been using Vagrant to manage development environments so I need to be

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 Select Box and I'm trying to change the background color of the options when the Select box has been clicked and shows all the options. See Fiddle html Please choose Option 1 Option 2 Option 3 Option 4 css select{ margin:40px; background: rgba(0,0,0,0.3); color:#fff; text-shadow:0 1px 0 rgba(0,0,0,0.4); } 回答1: You need to put background-color on the option tag and not the select tag... select option { margin: 40px; background: rgba(0, 0, 0, 0.3); color: #fff; text-shadow: 0 1px 0 rgba(0, 0, 0, 0.4); } If you want to style each one

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 data frame with several groups values, and I would like to have a boxplot per category (drawn together). I want to have each boxplot with a different width, based not on the rows count per category, but on a column sum. For example, with the following data.frame: Data <- data.frame(roadType = sample(c("Ramp", "Primary Street", "Highway"),100,replace=TRUE), drivesCount = sample(1:100,100,replace=TRUE), happyPercentage=sample(c(0,0.25,0.5,0.75,1),100,replace=TRUE)) I know there's a way to have varying width based on rows count, 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: ERROR net.serenitybdd.core.Serenity - No alert is present (WARNING: The server did not provide any stacktrace information) I get this error when I try to detect an alert with this code: Alert alertBox = getDriver().switchTo().alert(); The alert popup does show up, but it is not exactly the same when I execute the operation via Selenium WebDriver and manualy. This might be the source of the problem but I don't know why the popup is different. The alert when done manualy The alert when done with Selenium This is the function that calls the

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: How do you put in a new line into a JavaScript alert box? 回答1: \n will put a new line in - \n being a control code for new line. alert("Line 1\nLine 2"); 回答2: alert("some text\nmore text in a new line"); Output: some text more text in a new line 回答3: you have to use double quotes to display special char like \n \t etc... in js alert box for exemple in php script: $string = 'Hello everybody \n this is an alert box'; echo ""; But a second possible problem arrives when you want to display a string specified in double quoted. see link text If

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: What I want to do: I want to get the position and dimensions of a text instance in matplotlib world units (not screen pixels), with the intention of calculating and preventing text overlaps. I'm developing on Mac OSX 10.9.3, Python 2.7.5, matplotlib 1.3.1. What I've tried: Let t be a text instance. t .get_window_extent(renderer) : This gets bounding box dimensions in pixels, and I need world coordinates (normalized between -1.0 and 1.0 in my case). t ._get_bbox_patch(): t = ax.text(x, y, text_string, prop_dict, bbox=dict(facecolor='red',

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 to group boxplots in matplotlib? Assume we have three groups "A", "B", and "C" and for each we want to create a boxplot for both "apples" and "oranges". If a grouping is not possible directly, we can create all six combinations and place them linearly side by side. What would be to simplest way to visualize the groupings? I'm trying to avoid setting the tick labels to something like "A + apples" since my scenario involves much longer names than "A". 回答1: How about using colors to differentiate between "apples" and "oranges"

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 became yesterday a website in the school which use the css3 flexbox statement. I never used that before. So i google it a bit. And found a lot of different styles of the flexbox statements. Some guys write display: box; , some use display: flexbox; and other display: flex; . So what are the differents? Which i should use? 回答1: These are different styles. display: box; is a version of 2009. display: flexbox; is a version of 2011. display: flex; is the actual version. Quote of Paul Irish Warning: Flexbox has undergone some major revisions,

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 simple idea I'm trying to benchmark in Rust. However, when I go to measure it using test::Bencher , the base case that I'm trying to compare against: #![feature(test)] extern crate test; #[cfg(test)] mod tests { use test::black_box; use test::Bencher; const ITERATIONS: usize = 100_000; struct CompoundValue { pub a: u64, pub b: u64, pub c: u64, pub d: u64, pub e: u64, } #[bench] fn bench_in_place(b: &mut Bencher) { let mut compound_value = CompoundValue { a: 0, b: 2, c: 0, d: 5, e: 0, }; let val: &mut CompoundValue = &mut compound