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How to deep copy a list?
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Thanks.But I thought list() is a deep copy since id(E0) not equal to id(E0_copy). Could u explain why it happen?
– Shen
Jul 26 '13 at 7:53
15
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How do you delete an ActiveRecord object?
...ns and delete_all with conditions has been deprecated in Rails 5.1 - see guides.rubyonrails.org/5_1_release_notes.html
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Should IBOutlets be strong or weak under ARC?
...ple is for IBOutlets to be strong unless weak is specifically needed to avoid a retain cycle. As Johannes mentioned above, this was commented on in the "Implementing UI Designs in Interface Builder" session from WWDC 2015 where an Apple Engineer said:
And the last option I want to point out is t...
Remove ALL white spaces from text
This is a snippet from my code. I want to add a class to an ID after getting another ID's text property. The problem with this, is the ID holding the text I need, contains gaps between the letters.
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NSURLRequest setting the HTTP header
...P header for a request. In the documentation for the NSURLRequest class I didn't find anything regarding the HTTP header. How can I set the HTTP header to contain custom data?
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how to implement a long click listener on a listview
...tOnItemLongClickListener(new OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
int pos, long id) {
// TODO Auto-generated method stub
Log.v("long clicked","pos: " + p...
How do I get a value of a using jQuery?
...s, while .html() will not encode any characters.
– VoidKing
May 21 '13 at 21:32
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How to change color of SVG image using CSS (jQuery SVG image replacement)?
...bed an SVG graphic. I used Adobe Illustrator to make the graphic.
<img id="facebook-logo" class="svg social-link" src="/images/logo-facebook.svg"/>
This is just like how you'd embed a normal image. Note that you need to set the IMG to have a class of svg. The 'social-link' class is just for...
Using “Object.create” instead of “new”
...n exist, if you call again this method on an existing object instance, the id and name properties will change.
Object.create lets you initialize object properties using its second argument, e.g.:
var userB = {
sayHello: function() {
console.log('Hello '+ this.name);
}
};
var bob = Object....
Capturing URL parameters in request.GET
...ts.get(username=username)
message = request.GET.get('message')
As a side note, you'll find the request method (in this case "GET", and for submitted forms usually "POST") in request.method. In some cases it's useful to check that it matches what you're expecting.
Update: When deciding whether...