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Javascript what is property in hasOwnProperty?
...rns a boolean value indicating whether the object on which you are calling it has a property with the name of the argument. For example:
var x = {
y: 10
};
console.log(x.hasOwnProperty("y")); //true
console.log(x.hasOwnProperty("z")); //false
However, it does not look at the prototype chain o...
typeof !== “undefined” vs. != null
...
typeof is safer as it allows the identifier to never have been declared before:
if(typeof neverDeclared === "undefined") // no errors
if(neverDeclared === null) // throws ReferenceError: neverDeclared is not defined
...
Git rebase --continue complains even when all merge conflicts have been resolved
...l code in the patch beeing applied to the branch you are rebasing on. Use git rebase --skip to continue.
A bit more details:
Normally, when fixing a conflict during rebasing, you will edit the conflicting file, keeping some or all of the code in the patch currently being applied to the branch you...
Why doesn't Ruby support i++ or i-- (increment/decrement operators)?
...
Here is how Matz(Yukihiro Matsumoto) explains it in an old thread:
Hi,
In message "[ruby-talk:02706] X++?"
on 00/05/10, Aleksi Niemelä <aleksi.niemela@cinnober.com> writes:
|I got an idea from http://www.pragprog.com:8080/rubyfaq/rubyfaq-5.html#ss5.3
|and t...
Best programming aids for a quadriplegic programmer
Before you jump to conclusions, yes, this is programming related. It covers a situation that comes under the heading of, "There, but for the grace of God, go you or I." This is brand new territory for me so I'm asking for some serious help here.
...
C++ IDE for Macs [closed]
...follow
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edited Oct 13 '16 at 20:34
Lidakis Emmanuel
1,02588 silver badges1111 bronze badges
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html onchange event not working
...nt to happen is that everytime the user types in something in the textbox, it will be displayed in a dialog box. I used the onchange event property to make it happen but it doesn't work. I still need to press the submit button to make it work. I read about AJAX and I am thinking to learn about thi...
What is the difference between Hibernate and Spring Data JPA
...ng Data JPA is a JPA data access abstraction. Spring Data JPA cannot work without a JPA provider.
Spring Data offers a solution to the DDD Repository pattern or the legacy GenericDao custom implementations. It can also generate JPA queries on your behalf through method name conventions.
With Sprin...
Biggest GWT Pitfalls? [closed]
...ct that we chose to implement using GWT. Has anyone encountered any major pitfalls in using GWT (and GWT-EXT) that were unable to be overcome? How about from a performance perspective?
...
Is it acceptable and safe to run pip install under sudo?
...'ve started to use my Mac to install Python packages in the same way I do with my Windows PC at work; however on my Mac I've come across frequent permission denied errors while writing to log files or site-packages.
...