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How to destroy an object?
...
You're looking for unset().
But take into account that you can't explicitly destroy an object.
It will stay there, however if you unset the object and your script pushes PHP to the memory limits the objects not needed will be garbage collected....
libcurl的使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
..._easy_init()函数得到 easy interface型指针
3. 调用curl_easy_setopt设置传输选项
4. 根据curl_easy_setopt设置的传输选项，实现回调函数以完成用户特定任务
5. 调用curl_easy_perform（）函数完成传输任务
6. 调用curl_easy_cleanup...
Why do I need Transaction in Hibernate for read-only operations?
...it's just it will be working in autocommit=true if different option wasn't set explicitly.
But there is no guarantee that your method doesn't write into the database. If you mark method as @Transactional(readonly=true), Spring will set the JDBC transaction into a read-only mode, thus you'll dictate ...
How to add/update an attribute to an HTML element using JavaScript?
...at will add / update attribute using JavaScript. I know I can do it with setAttribute() function but that doesn't work in IE.
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Convert JavaScript string in dot notation into an object reference
...n interesting question in the comments:
how would you turn this into a setter as well? Not only returning the values by path, but also setting them if a new value is sent into the function? – Swader Jun 28 at 21:42
(sidenote: sadly can't return an object with a Setter, as that would violate ...
What is the difference between user variables and system variables?
...tem ones by accident, bring up the Registry Editor, then go to HKLM\ControlSet002\Control\Session Manager\Environment (assuming your current control set is not ControlSet002). Then find the Path value and copy the data into the Path value of HKLM\CurrentControlSet\Control\Session Manager\Environment...
Futures vs. Promises
...it is separated into these two separate "interfaces" is to hide the "write/set" functionality from the "consumer/reader".
auto promise = std::promise<std::string>();
auto producer = std::thread([&]
{
promise.set_value("Hello World");
});
auto future = promise.get_future();
auto con...
What is App.config in C#.NET? How to use it?
...of information.
Overview (MSDN)
Connection String Configuration (MSDN)
Settings can be configured using built-in configuration sections such as connectionStrings or appSettings. You can add your own custom configuration sections; this is an advanced topic, but very powerful for building strongly...
Group by with multiple columns using lambda
... new Element { Company = "ORACLE CORP",TypeOfInvestment = "Assets", Worth = 59372 },
new Element { Company = "PEPSICO INC",TypeOfInvestment = "Assets", Worth = 26516 },
new Element { Company = "PROCTER & GAMBL",TypeOfInvestment = "Stocks", Worth = 38...
Matplotlib transparent line plots
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After I plotted all the lines, I was able to set the transparency of all of them as follows:
for l in fig_field.gca().lines:
l.set_alpha(.7)
EDIT: please see Joe's answer in the comments.
...