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Checking if a variable is defined?
...correct syntax for the above statement is:
if (defined?(var)).nil? # will now return true or false
print "var is not defined\n".color(:red)
else
print "var is defined\n".color(:green)
end
substituting (var) with your variable. This syntax will return a true/false value for evaluation in the if ...
Multiple controllers with AngularJS in single page app
I want to know is how to use multiple controllers for a single page application. I have tried to figure it out and I've found questions very similar to mine, but there is just a ton of different answers solving a specific problem where you end up not using multiple controllers for a single page app....
Start/Stop and Restart Jenkins service on Windows
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How to know the jenkins status?
– Ripon Al Wasim
Nov 25 '15 at 6:21
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The definitive guide to form-based website authentication [closed]
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PART I: How To Log In
We'll assume you already know how to build a login+password HTML form which POSTs the values to a script on the server side for authentication. The sections below will deal with patterns for sound practical auth, and how to avoid the most common secur...
Remove tracking branches no longer on remote
... awk do all of the filtering: awk '/: gone]/{if ($1!="*") print $1}'. This now works as expected.
– rhaben
Aug 23 '16 at 17:29
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What is Virtual DOM?
... will be created which actually does not do any changes in the actual DOM. Now with this virtual DOM, you will be checking the difference between this and your current DOM. And only the part which is different (in this case the new <div>) will be added instead of re-rendering the whole DOM.
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Why can't overriding methods throw exceptions broader than the overridden method?
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How about @Override public void foo() {..} I know it's allowed but the explanation isn't clear for this case.
– nascar
Aug 25 '14 at 8:41
4
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Where should I put tags in HTML markup?
...).textContent = "Welcome back, Bart";
});
Because your browser does not know my-script.js isn't going to modify the document until it has been downloaded & executed, the parser stops parsing.
Antiquated recommendation
The old approach to solving this problem was to put <script> tags at...
Collections.emptyMap() vs new HashMap()
...learly states that the map is initialized to an empty map.
In addition - knowing that this method returns an immutable map, it is now easier for me to find where fooBarMap is being assigned another nonempty value just by searching for /fooBarMap =/.
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What is the purpose of the implicit grant authorization type in OAuth 2?
I don't know if I just have some kind of blind spot or what, but I've read the OAuth 2 spec many times over and perused the mailing list archives, and I have yet to find a good explanation of why the Implicit Grant flow for obtaining access tokens has been developed. Compared to the Authorization Co...