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Hashing a dictionary?
...e hash():
hash(frozenset(my_dict.items()))
This is much less computationally intensive than generating the JSON string or representation of the dictionary.
UPDATE: Please see the comments below, why this approach might not produce a stable result.
...
Sass .scss: Nesting and multiple classes?
... &:nth-child(1){ ... }
}
However, you can place the & at virtually any position you like*, so the following is possible too:
.container {
background:red;
#id &{
background:blue;
}
}
/* compiles to: */
.container {
background: red;
}
#id .container {
back...
How to find a min/max with Ruby
...ray#max, which are way faster than Enumerable's methods because they skip calling #each.
@nicholasklick mentions another option, Enumerable#minmax, but this time returning an array of [min, max].
[4, 5, 7, 10].minmax
=> [4, 10]
...
What is the difference between ~> and >= when specifying rubygem in Gemfile?
... and use that until it reaches a maximum version. So ~>0.8.5 is semantically equivalent to:
gem "cucumber", ">=0.8.5", "<0.9.0"
The easy way to think about it is that you're okay with the last digit incrementing to some arbitrary value, but the ones preceding it in the string cannot be gr...
How to delete from select in MySQL?
...n result sets. So you need to use IN, not = in your WHERE clause.
Additionally, as shown in this answer you cannot modify the same table from a subquery within the same query. However, you can either SELECT then DELETE in separate queries, or nest another subquery and alias the inner subquery resul...
How to pass html string to webview on android
... web view, after parsing I am creating four strings so that I could append all string to one view. I am able to get two views on the web view but not the first two strings.
...
Why does TestInitialize get fired for every test in my Visual Studio unit tests?
...re that no tests are coupled.
If you want to run methods before and after ALL tests, decorate relevant methods with the ClassInitialize and ClassCleanup attributes.
Relevant information from the auto generated test-file in Visual Studio:
You can use the following additional attributes as you writ...
Convert all first letter to upper case, rest lower for each word
...
Haha, really? That's where it is? I love .NET but some of the API designers are real jerks.
– George Mauer
Dec 21 '09 at 23:37
...
UnicodeDecodeError when redirecting to file
...n byte chunks. The necessary process that converts characters to bytes is called encoding. Thus, a computer requires an encoding in order to represent characters. Any text present on your computer is encoded (until it is displayed), whether it be sent to a terminal (which expects characters encode...
What do commas and spaces in multiple classes mean in CSS?
..._12 .grid_6,
.container_16 .grid_8 {
width: 460px;
}
That says "make all .grid_6's within .container_12's and all .grid_8's within .container_16's 460 pixels wide." So both of the following will render the same:
<div class="container_12">
<div class="grid_6">460px Wide</div&g...