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Test if string is a number in Ruby on Rails
I have the following in my application controller:
12 Answers
12
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Why do C++ libraries and frameworks never use smart pointers?
I read in a few articles that raw pointers should almost never be used. Instead they should always be wrapped inside smart pointers, whether it's scoped or shared pointers.
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How can I exclude one word with grep?
...
You can do it using -v (for --invert-match) option of grep as:
grep -v "unwanted_word" file | grep XXXXXXXX
grep -v "unwanted_word" file will filter the lines that have the unwanted_word and grep XXXXXXXX will list only lines with pattern XXXXXXXX.
EDIT:
From your ...
What is the best way to filter a Java Collection?
I want to filter a java.util.Collection based on a predicate.
27 Answers
27
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Where can I find a list of scopes for Google's OAuth 2.0 API? [closed]
...le I'm working with specifies the scope in the OAuth request as:
scope=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fuserinfo.email+https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fuserinfo.profile
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jquery if div id has children
...kground: #9f9;
}
.failure {
background: #f99;
}
<script src="https://code.jquery.com/jquery-1.12.2.min.js"></script>
<div id="test">
<span>Children</span>
</div>
<div id="test2">
No children
</div>
The vanilla JS way
If...
Replace line break characters with in ASP.NET MVC Razor view
I have a textarea control that accepts input. I am trying to later render that text to a view by simply using:
7 Answers
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How to find the mysql data directory from command line in windows
...command which mysql . But I could not find any in windows. I tried echo %path% and it resulted many paths along with path to mysql bin.
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Reversing a linked list in Java, recursively
I have been working on a Java project for a class for a while now. It is an implementation of a linked list (here called AddressList , containing simple nodes called ListNode ). The catch is that everything would have to be done with recursive algorithms. I was able to do everything fine sans one ...
AngularJS ng-if with multiple conditions
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...