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When should I use jQuery deferred's “then” method and when should I use the “pipe” method?
...g with "max" */
});
In both cases you have to iterate over the list and extract the value from each object.
Wouldn't it be better to somehow extract the values beforehand so that you don't have to do this in both callbacks individually? Yes! And that's what we can use .pipe() for:
deferred.pipe(f...
How do I 'svn add' all unversioned files to SVN?
... awk? Awk can do pattern matching: awk '/^[?]/{print $2}'; No need for the extra grep process.
– bdrx
Feb 26 '15 at 13:59
1
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Changing password with Oracle SQL Developer
... Thank you, it worked on Windows 7 64bit. I did have to go through an extra step though (which is the same as the first step on OS X config above), otherwise the 'reset password' option would remain grayed out. 4. Set path to Instant Client in Preferences -> Database -> Advanced -> Us...
Showing empty view when ListView is empty
... setContentView(R.layout.mylist);
// shows list view
String[] values = new String[] { "foo", "bar" };
// shows empty view
values = new String[] { };
setListAdapter(new ArrayAdapter<String>(
this,
android.R.layout.s...
Why should you remove unnecessary C# using directives?
...
Leaving extra using directives is fine. There is a little value in removing them, but not much. For example, it makes my IntelliSense completion lists shorter, and therefore easier to navigate.
The compiled assemblies are not affe...
How to pass json POST data to Web API method as an object?
...bjectResult)
Use
contentType:"application/json"
You need to use JSON.stringify method to convert it to JSON string when you send it,
And the model binder will bind the json data to your class object.
The below code will work fine (tested)
$(function () {
var customer = {contact_name :"S...
Add a default value to a column through a migration
..., since change_column is irreversible.
Instead, though it may be a couple extra lines, you should use def up and def down
So if you have a column with no default value, then you should do this to add a default value.
def up
change_column :users, :admin, :boolean, default: false
end
def down
...
How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?
...e integers and I need it in integer type in a query. Some values are empty strings.
The following:
13 Answers
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Why (0-6) is -6 = False? [duplicate]
...
It is happening because CPython caches some small integers and small strings and gives every instance of that object a same id().
(0-5) and -5 has same value for id(), which is not true for 0-6 and -6
>>> id((0-6))
12064324
>>> id((-6))
12064276
>>> id((0-5))
10022...
How can I add a column that doesn't allow nulls in a Postgresql database?
...
Or, create a new table as temp with the extra column, copy the data to this new table while manipulating it as necessary to fill the non-nullable new column, and then swap the table via a two-step name change.
Yes, it is more complicated, but you may need to do it...