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mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc… expects parameter 1 to
...been removed in php version 7.
Check $result before passing it to mysql_fetch_array. You'll find that it's false because the query failed. See the mysql_query documentation for possible return values and suggestions for how to deal with them.
$username = mysql_real_escape_string($_POST['username'...
What algorithm does Readability use for extracting text from URLs?
... This is the mostly prominent type of text in navigational elements (menus etc.)
If an author wants you to deeply understand what he/she means, he/she uses many words. This way, ambiguity is removed at the cost of an increase in redundancy. Article-like content usually falls into this class as it h...
Difference between a theta join, equijoin and natural join
... created by various vendors such as Microsoft's SQL Server, Oracle's MySQL etc. ) don't even bother supporting this, it is just bad practice (or purposely chose not to implement it). Imagine that a developer comes and changes the name of the second column in Product from Price to Cost. Then all the ...
General guidelines to avoid memory leaks in C++ [closed]
...ption safety and resource disposal in C++, and no other pattern (sandwich, etc.) will give you both (and most of the time, it will give you none).
See below a comparison of RAII and non RAII code:
void doSandwich()
{
T * p = new T() ;
// do something with p
delete p ; // leak if the p pro...
How to convert a string to utf-8 in Python
..."utf-8")
^ Converting to unicode and specifying the encoding.
In Python 3
All strings are unicode. The unicode function does not exist anymore. See answer from @Noumenon
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Formatting numbers (decimal places, thousands separators, etc) with CSS
...with CSS?
That is: decimal places, decimal separator, thousands separator, etc.
10 Answers
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What does the PHP error message “Notice: Use of undefined constant” mean?
... is, it was looking for constants called department, name, email, message, etc. When it doesn't find such a constant, PHP (bizarrely) interprets it as a string ('department', etc). Obviously, this can easily break if you do defined such a constant later (though it's bad style to have lower-case co...
Convert JavaScript string in dot notation into an object reference
...the first place (most ideal if it's only client-side or only server-side), etc. (A pre-existing unique id would be inelegant to add, but could be used if the spec otherwise requires its existence regardless.)
case 2: Working with serialized data, or data that will be displayed to the user. L...
shared_ptr指针被赋值后，原指针会引用清零、自动释放。 - C/C++ - 清泛网 ...
...::shared_ptr<int> p)
{
intg = p; // 原指针释放，存储新的智能指针
//*(intg.get()) = *(p.get()); // 原指针不释放，仅修改原指针指向的内容
}
int _tmain(int argc, _TCHAR* argv[])
{
{
std::shared_ptr<int> sp(new int(2)...
std::vector find查找方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...= vecTest.end();
注意：.begin()，.end()一定不要忘记了后面的括号，否则报如下错误：
error C3867: “std::vector<_Ty>::end”: 函数调用缺少参数列表；请使用“&std::vector<_Ty>::end”创建指向成员的指针vector find