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How to list variables declared in script in bash?
In my script in bash, there are lot of variables, and I have to make something to save them to file.
My question is how to list all variables declared in my script and get list like this:
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Filtering for empty or NULL names in a queryset
...e.objects.exclude(alias__isnull=True)
If you need to exclude null values and empty strings, the preferred way to do so is to chain together the conditions like so:
Name.objects.exclude(alias__isnull=True).exclude(alias__exact='')
Chaining these methods together basically checks each condition i...
Deserializing JSON to .NET object using Newtonsoft (or LINQ to JSON maybe?)
...ecause you don't need to fully deserialize the JSON object. This comes in handy with APIs that can sometimes surprise you with missing object properties, like Twitter.
Documentation: Serializing and Deserializing JSON with Json.NET and LINQ to JSON with Json.NET
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How to concatenate columns in a Postgres SELECT?
I have two string columns a and b in a table foo .
8 Answers
8
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What are fixtures in programming?
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The purpose of a test fixture is to ensure that there is a well known
and fixed environment in which tests are run so that results are
repeatable. Some people call this the test context.
Examples of fixtures:
Loading a database with a specific, known set of data
Erasing a hard ...
How to print a string in fixed width?
...
EDIT 2013-12-11 - This answer is very old. It is still valid and correct, but people looking at this should prefer the new format syntax.
You can use string formatting like this:
>>> print '%5s' % 'aa'
aa
>>> print '%5s' % 'aaa'
aaa
>>> print '%5s' % '...
Fluid or fixed grid system, in responsive design, based on Twitter Bootstrap
...etting confused about the various options in the twitter bootstrap grid , and how they go together.
5 Answers
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How does the extend() function work in jQuery?
...arameter.
Returns the first parameter.
This is useful for combining user and default option-objects together to get a complete set of options:
function foo(userOptions) {
var defaultOptions = {
foo: 2,
bar: 2
};
var someOtherDefaultOptions = {
baz: 3
};
var allOptions = jQu...
PostgreSQL error 'Could not connect to server: No such file or directory'
...n your postgres directory, probably /usr/local/var/postgres/
remove this and start server.
Check - https://github.com/mperham/lunchy is a great wrapper for launchctl.
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Is it possible to have multiple statements in a python lambda expression?
...s a version of sort that creates a new list, rather than sorting in-place, and can be chained. Note that this is probably what you should be using - it's bad practice for your map to have side effects on the original list.
Q. How should I get the second lowest item from each list in a sequence of ...