大约有 25,400 项符合查询结果（耗时：0.0536秒） [XML]
How to avoid overflow in expr. A * B - C * D
I need to compute an expression which looks like:
A*B - C*D , where their types are: signed long long int A, B, C, D;
Each number can be really big (not overflowing its type). While A*B could cause overflow, at same time expression A*B - C*D can be really small. How can I compute it correctly...
What are the differences between concepts and template constraints?
I want to know what are the semantic differences between the C++ full concepts proposal and template constraints (for instance, constraints as appeared in Dlang or the new concepts-lite proposal for C++1y ).
...
C++ unordered_map using a custom class type as the key
I am trying to use a custom class as key for an unordered_map , like the following:
3 Answers
...
How to change the CHARACTER SET (and COLLATION) throughout a database?
Our previous programmer set the wrong collation in a table (Mysql). He set it up with Latin collation, when it should be UTF8, and now I have issues. Every record with Chinese and Japan character turn to ??? character.
...
Logging levels - Logback - rule-of-thumb to assign log levels
I'm using logback in my current project.
5 Answers
5
...
How do I create a right click context menu in Java Swing?
I'm currently creating a right-click context menu by instantiating a new JMenu on right click and setting its location to that of the mouse's position... Is there a better way?
...
HTML 5 Favicon - Support?
I was reading the Favicon page on Wikipedia. They mention the HTML 5 spec for Favicon:
2 Answers
...
How do I put a bunch of uncommitted changes aside while working on something else
If I have a bunch of uncommitted changes and want to set it aside while working on something else instead, and then later (f.i. after several days) come back to it and proceed working. What would be the easiest workflow to accomplish this? (So far I have only experience with Mercurial's basic functi...
overlay two images in android to set an imageview
I am trying to overlay two images in my app, but they seem to crash at my canvas.setBitmap() line. What am I doing wrong?
...
What is the JSF resource library for and how should it be used?
The JSF <h:outputStylesheet> , <h:outputScript> and <h:graphicImage> components have a library attribute. What is this and how should this be used? There are a lot of examples on the web which use it as follows with the common content/file type css , js and img (or ima...