Your negative lookahead solution would e.g. be this:

    \$?:.(?!\$)+$

See it [here on Regexr][1]


  [1]: http://regexr.com?2vckg

One that worked for me was:

    .+(\\.+)$

[Try it online!][1]

Explanation:

    .+     - any character except newline
    (      - create a group
     \\.+   - match a backslash, and any characters after it
    )      - end group
    $      - this all has to happen at the end of the string


[1]:https://regex101.com/r/sI7bW4/1

A negative look ahead is a correct answer, but it can be written more cleanly like:

    (\\)(?!.*\\)

This looks for an occurrence of \ and then in a check that does not get matched, it looks for any number of characters followed by the character you don&#39;t want to see after it. Because it&#39;s negative, it only matches if it does not find a match.

You can try anchoring it to the end of the string, something like `\\[^\\]*$`. Though I&#39;m not sure if one absolutely has to use regexp for the task.

If you don&#39;t want to include the backslash, but only the text after it, try this: `([^\\]+)$` or for unix: `([^\/]+)$`

I used below regex to get that result also when its finished by a `\`

    (\\[^\\]+)\\?$

[**`[Regex Demo]`**](https://regex101.com/r/ix784V/2)

What is the difference between using a `@OneToMany` and `@ElementCollection` annotation since both work on the one-to-many relationship?

Difference between @OneToMany and @ElementCollection?

I am getting an error when trying to compile my code in g++ using the current signature:

    cannot declare member function static void Foo::Bar(std::ostream&amp;, const Foo::Node*) to have static linkage


My question is twofold:

 1. Why does it not Compile this way?
 2. What is the correct signature, and why?


Signatures have always been the death of me when using C++




Edit: Here is the class header file, as well:

    class Foo {


    public:
        Foo();

        ~Foo();

        bool insert(const Foo2 &amp;v);

        Foo * find(const Foo2 &amp;v);

        const Foo * find(const Foo2 &amp;v) const;

        void output(ostream &amp;s) const;

    private:
        //Foo(const Foo &amp;v);
        //Foo&amp; operator =(const Foo &amp;v);
        //Not implemented; unneeded


        struct Node {
            Foo2 info;
            Node *left;
            Node *right;
        };

        Node * root;

        static bool insert(const Foo2 &amp;v, Node *&amp;p);


        static void output(ostream &amp;s, const Node *p);


        static void deleteAll(Node *p);


Static member functions error; How to properly write the signature?

I&#39;m trying to catch the last part after the last backslash  
I need the **`\Web_ERP_Assistant`** (with the `\`)

My idea was : 

    C:\Projects\Ensure_Solution\Assistance\App_WebReferences\Web_ERP_WebService\Web_ERP_Assistant


    \\.+?(?!\\)      //  I know there is something with negative look -ahead `(?!\\)`

But I can&#39;t find it.

[**`[Regexer Demo]`**](http://regexr.com?2vckd)

Regex Last occurrence?

I'm trying to catch the last part after the last backslash 
I need the <code>\Web_ERP_Assistant</code> (with the <code>\</code>)
My idea was :
<pre><code class="hljs language-arduino">C:\Projects\Ensure_Solution\Assistance\App_WebReferences\Web_ERP_WebService\Web_ERP_Assistant


\\.+?(?!\\) // I know there is something with negative look -ahead `(?!\\)`
</code></pre>
But I can't find it.
<a href="http://regexr.com?2vckd" target="_blank" rel="noopener noreferrer"><code>[Regexer Demo]</code></a>

Looking for a regex/replace function to take a user inputted string say, &quot;John Smith&#39;s Cool Page&quot; and return a filename/url safe string like &quot;john_smith_s_cool_page.html&quot;, or something to that extent.


javascript url-safe filename-safe string

I have the following type of string

    var string = &quot;&#39;string, duppi, du&#39;, 23, lala&quot;

I want to split the string into an array on each comma, but only the commas outside the single quotation marks.

I can&#39;t figure out the right regular expression for the split...

    string.split(/,/)

will give me

    [&quot;&#39;string&quot;, &quot; duppi&quot;, &quot; du&#39;&quot;, &quot; 23&quot;, &quot; lala&quot;]

but the result should be:

    [&quot;string, duppi, du&quot;, &quot;23&quot;, &quot;lala&quot;]

Is there a cross-browser solution?




How can I parse a CSV string with JavaScript, which contains comma in data?

grep fails when using both --ignore-case and --only-match options.
Example:

    $ echo &quot;abc&quot; | grep -io abc
    abc
    $ echo &quot;ABC&quot; | grep -io abc
    $ 
But

    $ echo &quot;abc&quot; | grep -i abc
    abc
    $ echo &quot;ABC&quot; | grep -i abc
    ABC

According to man page:
&gt;        -o, --only-matching
&gt;               Show only the part of a matching line that matches PATTERN.
&gt;        -i, --ignore-case
&gt;               Ignore case distinctions in both the PATTERN and the input files.

Is it a bug of grep or I didn&#39;t get the map page?

I am using Mac OS X 10.6.8 and 

    $ grep --version
    grep (GNU grep) 2.5.1

Found this link: http://lists.gnu.org/archive/html/bug-gnu-utils/2003-11/msg00040.html

Of course it is possible to use workaround like `grep -o [aA][bB][cC]`, but this doesn&#39;t seem to be a good option.

grep --ignore-case --only

I would like to match just the root of a URL and not the whole URL from a text string. Given: 

&lt;!-- language: lang-none --&gt;

    http://www.youtube.com/watch?v=ClkQA2Lb_iE
    http://youtu.be/ClkQA2Lb_iE
    http://www.example.com/12xy45
    http://example.com/random

I want to get the 2 last instances resolving to the `www.example.com` or `example.com` domain. 

I heard regex is slow and this would be my second regex expression on the page so If there is anyway to do it without regex let me know.

I&#39;m seeking a JS/jQuery version of this solution.

Extract hostname name from string

Ruby&#39;s `Test::Unit` has a nice `assert_matches` method that can be used in unit tests to assert that a regex matches a string.

Is there anything like this in JUnit? Currently, I do this:

    assertEquals(true, actual.matches(expectedRegex));



Assert regex matches in JUnit

The standard predefined macro `__FILE__` available in C shows the full path to the file. Is there any way to short the path? I mean instead of

    /full/path/to/file.c

I see

    to/file.c

or 

    file.c

__FILE__ macro shows full path

I wanted to know what is the pythonic function for this : 

I want to remove everything before the `wa` path.

    p = path.split(&#39;/&#39;)
    counter = 0
    while True:
        if p[counter] == &#39;wa&#39;:
            break
        counter += 1
    path = &#39;/&#39;+&#39;/&#39;.join(p[counter:])

For instance, I want `&#39;/book/html/wa/foo/bar/&#39;` to become `&#39;/wa/foo/bar/&#39;`.

How to remove a path prefix in python?

I set the `c:/android-sdk/tools` path to the path environment and commands like `emulator` is working just fine. But the `adb` command is still not recognized, what should I do ?

In the `path` system variable I added the `android-sdk` path and the `tools` path so far. Is there something else that needs to be done? Because commands like `adb devices` do not work. It says that the command is not recognized. By the way I want to do `adb install comeapp.apk`.

adb is not recognized as internal or external command on windows

&gt; **Possible Duplicate:**  
&gt; [Accessing nested JavaScript objects with string key](https://stackoverflow.com/questions/6491463/accessing-nested-javascript-objects-with-string-key)  

&lt;!-- End of automatically inserted text --&gt;

Maybe the title is not clear enough, I just didn&#39;t know how to specify what I&#39;m looking for and my English is really bad, sorry.

I&#39;m trying to create function that returns object value, but also plays nice with nested objects. For example:

    var obj = {
      foo: { bar: &#39;baz&#39; }
    };

I want to access the value of obj.foo.bar by suppling the string &quot;foo.bar&quot; to the function.

    function(obj, path) {
      // Path can be &quot;foo.bar&quot;, or just &quot;foo&quot;.
    }

Thanks!

Javascript: Get deep value from object by passing path to it as string

Is there any way to automatically delete all files or folders with few R command lines?
I am aware of the `unlink()` or `file.remove()` functions, but for those you need to define a character vector with exactly all the names of the files you want to delete.  I am looking more for something that lists all the files or folders within a specific path (e.g. &#39;C:/Temp&#39;) and then delete all files with a certain name (regardless of its extension).

Any help is very much appreciated!



Content Type	Original Author	Original Content on Stackoverflow
Question	Royi Namir	View Question on Stackoverflow
Solution 1 - Regex	stema	View Answer on Stackoverflow
Solution 2 - Regex	Jeeter	View Answer on Stackoverflow
Solution 3 - Regex	TimE	View Answer on Stackoverflow
Solution 4 - Regex	Michael Krelin - hacker	View Answer on Stackoverflow
Solution 5 - Regex	SERPRO	View Answer on Stackoverflow
Solution 6 - Regex	Katja	View Answer on Stackoverflow
Solution 7 - Regex	shA.t	View Answer on Stackoverflow

Regex Last occurrence?

Regex Problem Overview

Regex Solutions

Solution 1 - Regex

Solution 2 - Regex

Solution 3 - Regex

Solution 4 - Regex

Solution 5 - Regex

Solution 6 - Regex

Solution 7 - Regex

Static member functions error; How to properly write the signature?

Difference between @OneToMany and @ElementCollection?

Attributions