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Unit tests vs Functional tests
... means, generally, that you are testing system functionality -- when I run foo file.txt at the command line, the lines in file.txt become reversed, perhaps. In contrast, a single unit test generally covers a single case of a single method -- length("hello") should return 5, and length("hi") should ...
Ways to circumvent the same-origin policy
...events properly via postMessage:
<script>window.parent.postMessage('foo','*')</script>
Any window may access this method on any other window, at any time, regardless of the location of the document in the window, to send it a message. Consequently, any event listener used to receive m...
Interface vs Base class
...additional features of a class. I'd call it an "is" relationship, like in "Foo is disposable", hence the IDisposable interface in C#.
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'this' vs $scope in AngularJS controllers
...n instance (this) of MyCtrl on the scope for use in the template via {{ MC.foo }}
– William B
Nov 25 '16 at 18:07
Android - how do I investigate an ANR?
...find "waiting to lock"
example : waiting to lock <0xblahblah> (a com.foo.A) held by threadid=74
You can notice that "tid=74" hold a task now. So go to tid=74
tid=74 maybe SUSPENDED state! find main reason!
trace does not always contain "waiting to lock". in this case it is hard to find main...
What is the difference between '>' and a space in CSS selectors?
...t;/div>
but it doesn't match <div class='card'>....<div class='foo'> ... <div class='name'>xxx</div>..</div>....</div>
div.card div.name matches both.
That is, the > selector makes sure that the selected element on the right side
of the > is an immidiat...
Where to define custom error types in Ruby and/or Rails?
...
in rails you can make app/errors directory
# app/errors/foo_error.rb
class FooError < StandardError; end
restart spring/server and it should pick it up
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Why the switch statement cannot be applied on strings?
...eturn eFred;
if (inString == "Barney") return eBarney;
...
}
void foo() {
switch (hashit(stringValue)) {
case eFred:
...
case eBarney:
...
}
}
There are a bunch of obvious optimizations that pretty much follow what the C compiler would do with a switch stat...
setup.py examples?
...al example
from setuptools import setup, find_packages
setup(
name="foo",
version="1.0",
packages=find_packages(),
)
More info in docs
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...
Why use double indirection? or Why use pointers to pointers?
... word = malloc(4 * sizeof *word); // assume it worked
strcpy(word, "foo");
sentence = malloc(4 * sizeof *sentence); // assume it worked
sentence[0] = word;
sentence[1] = word;
sentence[2] = word;
sentence[3] = NULL;
monologue = malloc(4 * sizeof *monologue); // assum...