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shared_ptr指针被赋值后，原指针会引用清零、自动释放。 - C/C++ - 清泛IT...
shared_ptr指针被赋值后，原指针会引用清零、自动释放。
std::shared_ptr<int> intg;
void foo(std::shared_ptr<int> p)
{
        intg = p;   // 原指针释放，存储新的智能指针
        //*(in...
Bootstrap throws Uncaught Error: Bootstrap's JavaScript requires jQuery [closed]
I am trying to use Bootstrap to make an interface for a program. I added jQuery 1.11.0 to the <head> tag and thought that was that, but when I launch the web page in a browser jQuery reports an error:
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How to use '-prune' option of 'find' in sh?
I don't quite understand the example given from the man find , can anyone give me some examples and explanations? Can I combine regular expression in it?
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How to run functions in parallel?
... first and couldn't find an answer to my question. I am trying to run multiple functions in parallel in Python.
6 Answers
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Is it possible to use Java 8 for Android development?
...native support for Java 8. gradle-retrolambda is now no longer needed. See https://developer.android.com/studio/write/java8-support.html
The above link also includes migration instructions if you are using gradle-retrolambda. Original answer below:
Android does not support Java 8. It only suppor...
How do I install Maven with Yum?
...is entry in the /etc/yum.repos.d/epel-apache-maven.repo repo file: baseurl=https://repos.fedorapeople.org/repos/dchen/apache-maven/epel-6/$basearch/
– i_grok
Dec 3 '15 at 16:46
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How to set current working directory to the directory of the script in bash?
I'm writing a bash script. I need the current working directory to always be the directory that the script is located in.
1...
How can I print the contents of a hash in Perl?
I keep printing my hash as # of buckets / # allocated.
How do I print the contents of my hash?
11 Answers
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Loop inside React JSX
...o allow react to uniquely identify each
// element in this array. see: https://reactjs.org/docs/lists-and-keys.html
rows.push(<ObjectRow key={i} />);
}
return <tbody>{rows}</tbody>;
Incidentally, my JavaScript example is almost exactly what that example of JSX transforms ...
Javascript and regex: split string and keep the separator
...
Use (positive) lookahead so that the regular expression asserts that the special character exists, but does not actually match it:
string.split(/<br \/>(?=&#?[a-zA-Z0-9]+;)/g);
See it in action:
var string = "aaa...