大约有 42,000 项符合查询结果（耗时：0.0806秒） [XML]
Why is vertical-align: middle not working on my span or div?
I'm trying to vertically center a span or div element within another div element. However when I put vertical-align: middle , nothing happens. I've tried changing the display properties of both elements, and nothing seems to work.
...
Solving a “communications link failure” with JDBC and MySQL [duplicate]
I'm trying to connect to the local MySQL server but I keep getting an error.
25 Answers
...
Determining Whether a Directory is Writeable
What would be the best way in Python to determine whether a directory is writeable for the user executing the script? Since this will likely involve using the os module I should mention I'm running it under a *nix environment.
...
what is Promotional and Feature graphic in Android Market/Play Store?
... and need whether we are uploading our app into the market? Please Explain or give me a related links.
7 Answers
...
Are arrays in PHP copied as value or as reference to new variables, and when passed to functions?
1) When an array is passed as an argument to a method or function, is it passed by reference, or by value?
8 Answers
...
How can I get the current date and time in UTC or GMT in Java?
...nce a fixed epoch, the value within java.util.Date is the same around the world at any particular instant, regardless of local time zone.
I suspect the problem is that you're displaying it via an instance of Calendar which uses the local timezone, or possibly using Date.toString() which also uses t...
Android REST client, Sample?
...s thread has accepted answer, feel free to propose other ideas, you do use or like
7 Answers
...
How do I debug an MPI program?
...to any particular process, but I'm not really sure whether that's possible or how to do it. An alternative would be having each process write debug output to a separate log file, but this doesn't really give the same freedom as a debugger.
...
ping response “Request timed out.” vs “Destination Host unreachable”
...problems: either the local system has no route to the desired destination, or a remote router reports that it has no route to the destination.
If the message is simply "Destination Host Unreachable," then there is no route from the local system, and the packets to be sent were never put on the wire...
What's the difference between HEAD^ and HEAD~ in Git?
When I specify an ancestor commit object in Git, I'm confused between HEAD^ and HEAD~ .
15 Answers
...