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What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
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163
The Gemfile is where you specify which gems you want to use, and lets you specify which versio...
How to redirect both stdout and stderr to a file [duplicate]
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If you want to log to the same file:
command1 >> log_file 2>&1
If you want different files:
command1 >> log_file 2>> err_file
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impr...
jQuery how to find an element based on a data-attribute value?
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1506
You have to inject the value of current into an Attribute Equals selector:
$("ul").find(`[da...
Migrating from JSF 1.2 to JSF 2.0
I am working with a rather large app written in JSF 1.2 .
JSF 1.2 is around 6 years old now. I need to upgrade to JSF 2.0. How painful will this be? I noticed that some attributes in custom tags have been changed etc.
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How to handle exceptions in a list comprehensions?
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101
There is no built-in expression in Python that lets you ignore an exception (or return alterna...
Why start an ArrayList with an initial capacity?
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11 Answers
11
Active
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Add Variables to Tuple
...tion. However, you can concatenate or slice them to form new tuples:
a = (1, 2, 3)
b = a + (4, 5, 6) # (1, 2, 3, 4, 5, 6)
c = b[1:] # (2, 3, 4, 5, 6)
And, of course, build them from existing values:
name = "Joe"
age = 40
location = "New York"
joe = (name, age, location)
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How do I filter query objects by date range in Django?
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Use
Sample.objects.filter(date__range=["2011-01-01", "2011-01-31"])
Or if you are just trying to filter month wise:
Sample.objects.filter(date__year='2011',
date__month='01')
Edit
As Bernhard Vallant said, if you want a queryset which ex...
Where is JAVA_HOME on macOS Mojave (10.14) to Lion (10.7)?
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1062
With the Java optional package or Oracle JDK installed,
adding one of the following lines t...
What's the most efficient way to test two integer ranges for overlap?
Given two inclusive integer ranges [x1:x2] and [y1:y2], where x1 ≤ x2 and y1 ≤ y2, what is the most efficient way to test whether there is any overlap of the two ranges?
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