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How should I call 3 functions in order to execute them one after the other?
...ideo on YouTube: youtube.com/watch?v=y5mltEaQxa0 - and wrote up the source from the video here drive.google.com/file/d/1NrsAYs1oaxXw0kv9hz7a6LjtOEb6x7z-/… There are some more nuances like the catch missing in this example that this elaborates on. (use a different id in the getPostById() line or tr...
How do I get the opposite (negation) of a Boolean in Python?
...__invert__ like that could be confusing because it's behavior is different from "normal" Python behavior. If you ever do that clearly document it and make sure that it has a pretty good (and common) use-case.
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Caching a jquery ajax response in javascript/browser
...n for improving this to support using $.ajax as a promise? Returning false from beforeSend cancels the request (as it should) so existing $.ajax(...).done(function(response) {...}).fail(...) now stop working because fail is invoked rather than done... and I would rather not rewrite them all :(
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Regular expression for letters, numbers and - _
...ink that you need a little more. Note this doesn't match legal file names from a system perspective. That would be system dependent and more liberal in what it accepts. This is intended to match your acceptable patterns.
^([a-zA-Z0-9]+[_-])*[a-zA-Z0-9]+\.[a-zA-Z0-9]+$
Explanation:
^ Match th...
Rails 3 check if attribute changed
...e it does. If you assign the values using the params hash, these have come from the form.
– Peter Brown
Jan 29 '13 at 20:27
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@UniqueConstraint and @Column(unique = true) in hibernate annotation
...= true) is a shortcut to UniqueConstraint when it is only a single field.
From the example you gave, there is a huge difference between both.
@Column(unique = true)
@ManyToOne(optional = false, fetch = FetchType.EAGER)
private ProductSerialMask mask;
@Column(unique = true)
@ManyToOne(optional = f...
What makes JNI calls slow?
... making its own calls to the JVM. Accessing Java fields, methods and types from the native code requires something similar to reflection. Signatures are specified in strings and queried from the JVM. This is both slow and error-prone.
Java Strings are objects, have length and are encoded. Accessing ...
Jasmine.js comparing arrays
...ect(mockArr ).toEqual([1, 2, 3]);
});
But if the array that is returned from some function has more than 1 elements and all are zero then verify by using
expect(mockArray[0]).toBe(0);
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C/C++ NaN constant (literal)?
...e is NaN, you can't compare it with another NaN value. Instead use isnan() from <math.h> in C, or std::isnan() from <cmath> in C++.
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SVG Positioning
...t;rect x="0" y="0" width="60" height="10"/>
</g>
Links: Example from the SVG 1.1 spec
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