大约有 40,000 项符合查询结果（耗时：0.0548秒） [XML]
Getting DOM elements by classname
... DOM and I'm trying to get an element within a DOM node that have a given class name. What's the best way to get that sub-element?
...
Git pull results in extraneous “Merge branch” messages in commit log
I'm working with another developer on a project, and we're using Github as our remote repo. I'm on a Mac using git 1.7.7.3, he's on Windows using git 1.7.6.
...
Optimise PostgreSQL for fast testing
I am switching to PostgreSQL from SQLite for a typical Rails application.
2 Answers
2
...
What is the proper declaration of main?
What is the proper signature of the main function in C++? What is the correct return type, and what does it mean to return a value from main ? What are the allowed parameter types, and what are their meanings?
...
Execution of Python code with -m option or not
...erpreter has -m module option that "Runs library module module as a script".
3 Answers
...
What GRANT USAGE ON SCHEMA exactly do?
I'm trying to create for the first time a Postgres database, so this is probably a stupid question. I assigned basic read-only permissions to the db role that must access the database from my php scripts, and I have a curiosity: if I execute
...
Can you explain the HttpURLConnection connection process?
I am using HTTPURLConnection to connect to a web service. I know how to use HTTPURLConnection but I want to understand how it works. Basically, I want to know the following:
...
php中0,null,empty,空,false,字符串关系详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。
这是关键的一个例子：
<?php
if('safdasefasefasf'==0){
echo "该字符串转换为数字 等于 0 <br/>";
} //output:该字符串转换为数字 等于零。
?>
手册上有解释：该值由字符串最前面的部分决定。如果字符串以合法的数字数据开始，...
Convert floats to ints in Pandas?
I've been working with data imported from a CSV. Pandas changed some columns to float, so now the numbers in these columns get displayed as floating points! However, I need them to be displayed as integers, or, without comma. Is there a way to convert them to integers or not display the comma?
...
What is the difference between active and passive FTP?
Can someone tell me what is the difference between active and passive FTP?
Which one is preferable?
5 Answers
...