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How do I partially update an object in MongoDB so the new object will overlay / merge with the exist
... data then?
You know you can do the following:
db.collection.update( { _id:...} , { $set: someObjectWithNewData }
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Postgres manually alter sequence
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The parentheses are misplaced:
SELECT setval('payments_id_seq', 21, true); # next value will be 22
Otherwise you're calling setval with a single argument, while it requires two or three.
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Android - Dynamically Add Views into View
...in any details dynamically here
TextView textView = (TextView) v.findViewById(R.id.a_text_view);
textView.setText("your text");
// insert into main view
ViewGroup insertPoint = (ViewGroup) findViewById(R.id.insert_point);
insertPoint.addView(v, 0, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.F...
Best way to use multiple SSH private keys on one client
...it usage within the same server). I tried simply stacking the keys in the id_rsa files to no avail.
20 Answers
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Javascript Equivalent to C# LINQ Select
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Yes, Array.map() or $.map() does the same thing.
//array.map:
var ids = this.fruits.map(function(v){
return v.Id;
});
//jQuery.map:
var ids2 = $.map(this.fruits, function (v){
return v.Id;
});
console.log(ids, ids2);
http://jsfiddle.net/NsCXJ/1/
Since array.map isn't supported ...
Android: How to bind spinner to custom object list?
...hich contains some names (the names are visible) and each name has its own ID (the IDs are not equal to display sequence). When the user selects the name from the list the variable currentID has to be changed.
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Difference between one-to-many and many-to-one relationship
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Yes, it a vice versa. It depends on which side of the relationship the entity is present on.
For example, if one department can employ for several employees then, department to employee is a one to many relationship (1 department employs many employees), while employ...
ruby on rails f.select options with custom attributes
...e in your question. Using html5 data-attributes:
<%= f.select :country_id, options_for_select(
@countries.map{ |c| [c.name, c.id, {'data-currency_code'=>c.currency_code}] }) %>
Adding an initial selection:
<%= f.select :country_id, options_for_select(
@countries.map{ |c| [c.n...
jQuery: more than one handler for same event
... multiple handlers on one element, therefore a later handler does not override an older handler.
The handlers will execute in the order in which they were bound.
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Immutable vs Mutable types
...'m confused on what an immutable type is. I know the float object is considered to be immutable, with this type of example from my book:
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