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Why are trailing commas allowed in a list?
... 1,
2,
3,
5
4,
]
# Now you have an error
But if you allow trailing commas, and use them, you can easily rearrange the lines without introducing an error.
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jQuery UI Sortable, then write order into a database
... .success(function(data) {
alert('saved');
})
.error(function(data) {
alert('Error: ' + data);
});
}
</script>
<ul id="sortable">
<?php
//my way to get all the articles, but you should of course use your own method.
$articles = Page::...
Does Foreign Key improve query performance?
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@HLGEM Getting a 404 error once in a while is still quite bearable. Having exceptional throughput in return using cheaper resources and less complex systems, now that sells very easily too. You might be interested in the C.A.P. theorem.
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Android: Scale a Drawable or background image?
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It shows error: error: <item> must have a 'name' attribute.
– Dmitry
Aug 15 '18 at 2:58
add a comment
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How do I get monitor resolution in Python?
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Works great on Windows but Mac I get the following Error: ImportError: Could not load X11
– Chris Lucian
Jan 15 '16 at 5:11
6
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Session variables in ASP.NET MVC
... out why I kept on getting a "Instance not set to an instance of an Object error". What I noticed is that in a controller when I tried to access the session by doing the following, I kept on getting that error. This is due to the fact that this.HttpContext is part of the Controller object.
this.Se...
Sqlite primary key on multiple columns
...e than one PRIMARY KEY clause in a single CREATE TABLE statement, it is an error." Yes, the railroad diagrams might indicate that is valid as well, but the text below clarifies that it is not.
– Brian Campbell
Mar 23 '11 at 19:03
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How to remove a key from a Python dictionary?
...ter is not specified (ie. my_dict.pop('key')) and key does not exist, a KeyError is raised.
To delete a key that is guaranteed to exist, you can also use
del my_dict['key']
This will raise a KeyError if the key is not in the dictionary.
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How does Python 2 compare string and int? Why do lists compare as greater than numbers, and tuples g
... changed so that attempting to order an integer and a string will raise an error:
>>> '10' > 5
Traceback (most recent call last):
File "<pyshell#0>", line 1, in <module>
'10' > 5
TypeError: unorderable types: str() > int()
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How to drop a PostgreSQL database if there are active connections to it?
... db connection that is not a connection to 'TARGET_DB', otherwise you get 'ERROR'. A 'postgres' connection works well.
– Rob
Jul 26 '11 at 16:00
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