大约有 30,000 项符合查询结果（耗时：0.0421秒） [XML]
How to properly import a selfsigned certificate into Java keystore that is available to all Java app
I do want to import a self signed certificate into Java so any Java application that will try to establish a SSL connection will trust this certificate.
...
MySQL, better to insert NULL or empty string?
I have a form on a website which has a lot of different fields. Some of the fields are optional while some are mandatory. In my DB I have a table which holds all these values, is it better practice to insert a NULL value or an empty string into the DB columns where the user didn't put any data?
...
How many characters can UTF-8 encode?
If UTF-8 is 8 bits, does it not mean that there can be only maximum of 256 different characters?
10 Answers
...
How to define an enumerated type (enum) in C?
I'm not sure what is the proper syntax for using C enums. I have the following code:
13 Answers
...
Create a tag in a GitHub repository
I have a repository in GitHub and I need to tag it.
I tagged in a shell, but on GitHub , it is not showing up.
7 Answ...
Detect if a page has a vertical scrollbar?
I just want some simple JQ/JS to check if the current page/window (not a particular element) has a vertical scrollbar.
13 A...
Java - escape string to prevent SQL injection
I'm trying to put some anti sql injection in place in java and am finding it very difficult to work with the the "replaceAll" string function. Ultimately I need a function that will convert any existing \ to \\ , any " to \" , any ' to \' , and any \n to \\n so that when the string is e...
Sending multipart/formdata with jQuery.ajax
I've got a problem sending a file to a serverside PHP-script using jQuery's ajax-function.
It's possible to get the File-List with $('#fileinput').attr('files') but how is it possible to send this Data to the server? The resulting array ( $_POST ) on the serverside php-script is 0 ( NULL ) when us...
Invoke(Delegate)
Can anybody please explain this statement written on this link
9 Answers
9
...
Is there a way for non-root processes to bind to “privileged” ports on Linux?
It's very annoying to have this limitation on my development box, when there won't ever be any users other than me.
23 Answ...