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What are '$$' used for in PL/pgSQL
Being co<em>mem>pletely new to PL/pgSQL , what is the <em>mem>eaning of double dollar signs in this function :
2 Answers
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How do you create optional argu<em>mem>ents in php?
In the PHP <em>mem>anual, to show the syntax for functions with optional para<em>mem>eters, they use brackets around each set of dependent optional para<em>mem>eter. For exa<em>mem>ple, for the date() function, the <em>mem>anual reads:
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Rails 4: before_filter vs. before_action
...rs creates CRUD operations with before_action not before_filter . It see<em>mem>s to do the sa<em>mem>e thing. So what's the difference between these two?
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Get current stack trace in Ruby without raising an exception
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You can use Kernel#caller:
# /t<em>mem>p/caller.rb
def foo
puts caller # Kernel#caller returns an array of strings
end
def bar
foo
end
def baz
bar
end
baz
Output:
caller.rb:8:in `bar'
caller.rb:12:in `baz'
caller.rb:15:in `&a<em>mem>p;lt;<em>mem>ain&a<em>mem>p;gt;'
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Adding a y-axis label to secondary y-axis in <em>mem>atplotlib
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The best way is to interact with the axes object directly
i<em>mem>port nu<em>mem>py as np
i<em>mem>port <em>mem>atplotlib.pyplot as plt
x = np.arange(0, 10, 0.1)
y1 = 0.05 * x**2
y2 = -1 *y1
fig, ax1 = plt.subplots()
ax2 = ax1.twinx()
ax1.plot(x, y1, 'g-')
ax2.plot(x, y2, 'b-')
ax1.set_xlabel('X data')
ax1....
Passing a list of kwargs?
Can I pass a list of kwargs to a <em>mem>ethod for brevity? This is what i'<em>mem> atte<em>mem>pting to do:
4 Answers
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WPF TextBox won't fill in StackPanel
...ientation is set to Horizontal , but can't get the TextBox to fill the re<em>mem>aining StackPanel space.
4 Answers
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Creating PHP class instance with a string
I have two classes, class ClassOne { } and class ClassTwo {} . I a<em>mem> getting a string which can be either "One" or "Two" .
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sche<em>mem>a builder laravel <em>mem>igrations unique on two colu<em>mem>ns
How can I set a unique constraints on two colu<em>mem>ns?
3 Answers
3
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Spring Data JPA find by e<em>mem>bedded object property
I want to write a Spring Data JPA repository interface <em>mem>ethod signature that will let <em>mem>e find entities with a property of an e<em>mem>bedded object in that entity. Does anyone know if this is possible, and if so how?
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