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问题 I have a UITableView (which happens to have a UISearchBar ) and can't seem to figure out how to get rid of the white/gray border above it. I need to have seamless black between the UISearchBar and the black above it. I have tried hiding the UISearchBar to see if that had anything to do with it, but the line still appeared. Any ideas? 回答1: In my case it helped to set: searchBar.clipsToBounds = YES; 回答2: You have to customise the UISearchBar background to match according to your requirements.

问题 I have a problem with the implicit LIBRARY_PATH modification of g++ between two versions ( g++ -v gives this info). I set the LIBRARY_PATH to a single local directory where I have custom libraries. However, it turned out that only one version of the g++ (let's call it version A) correctly linked, the other (version B) linked to the system-default, which was not desired. Apparently, the order of directories was mixed up and my specification was not properly respected. It is a similar issue to

问题 I have this structure: <div class="gBigPage"> <span class="gBigMonthShort">FEB</span><br /> <span class="gBigDayShort">23</span><br /> <span class="gBigYearShort">2011</span> </div> The gaps between the text lines are too big, I need them shortened so they are all virtually touching. /* Mouseover div for day numbers */ .gBigPage{ height:45px; width:30px; font-family:Arial; font-weight:bold; background-color:#ffee99; text-align:center; border-top:1px solid #c0c0c0; border-left:1px solid

问题 In my application I have a line drawn from one table cell to another cell through jQuery SVG plugin. Following the steps of the blog post http://www.openstudio.fr/Library-for-simple-drawing-with.html I managed to add it. But at the same time I need to remove that line and draw it on another place when mouse hovers. Is there a method to remove the drawn line or should I follow a different methodology to hide it or remove it ? Any help is highly appreciated. 回答1: According to the documentation

问题 How line can be represented using Boost Geometry? I don't need finite segment, but I need infinite lines (maybe Segment or Linestring can be extended?) As I understand I can use boost::geometry::intersects , but I don't know how to define infinite line. 回答1: If you want to test whether an infinite line A intersects a line segment B , this can be done using boost::geometry::strategy::side::side_by_triangle: template <typename Point> struct line { boost::geometry::model::segment<Point> segment;

问题 I have searched throughout the Internet and found hundreds of implementation of Bresenham's line drawing algorithm. But, one thing I found strange is, only two or three of them can cover all of the eight octets. still, they are being used in many applications. For example, this lady implemented this version (line 415) of Bresenham's algorithm. But, it doesn't cover the whole 360 degrees. This guy here seems to be developing a library. But still it doesn't work properly. Can you tell me why?

问题 I need to draw a line between two meshes I've created. Each mesh is associated with a different model matrix. I've been thinking on how to do this and I thought of this: glMatrixMode(GL_MODELVIEW); glLoadMatrixf(first_object_model_matrix); glBegin(GL_LINES); glVertex3f(0, 0, 0); // object coord glMatrixMode(GL_MODELVIEW); glLoadMatrixf(first_object_model_matrix); glVertex3f(0, 0, 0); // ending point of the line glEnd( ); But the problem is that I can't call glMatrixMode and glLoadMatrixf

问题 My first time posting, I'm hoping someone could help me with this error that has appeared on my website as of Wednesday, I'm not sure how to correct it since I've never touched the .php file. If I could get some help, I would be really appreciative of it. The website with error, located at the top of the page. The error is: Warning: Creating default object from empty value in whitelight/functions/admin-hooks.php on line 160 Here is the code from lines 150 -170 回答1: This probably means that

问题 Just a quick question: I'm trying to plot a graph in R and I have covered how to do that, but how do I delete a line I have just created? For instance: x <- c(1, 2, 4, 5, 6.7, 7, 8, 10 ) y <- c(40, 30, 10, 20, 53, 20, 10, 5) plot(x,y,main="X vs Y", xlab="X", ylab="Y") lines(x,y,col="black",lty="dotted") This produces a nice graph. However, say I would like to delete the line I created previously (or perhaps the points as well?!) how should I go about doing it? 回答1: The trick to erasing in R

问题 I am trying to find and replace line breaks in text using javascript. The following works. It replaces the character a with the character z. var text = "aasdfasdf"; text= text.replace(/a/g,"z"); alert(text); The following based on other posts on this and other message boards does not. Basically the javascript does not fire: var text = "aasdfasdf"; text= text.replace(/\n/g,"z"); alert(text); ...Here is one of many posts that suggests it should work. JavaScript: How to add line breaks to an