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How to change the background color of a UIButton while it's highlighted?
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Hashing a file in Python
... break
md5.update(data)
sha1.update(data)
print("MD5: {0}".format(md5.hexdigest()))
print("SHA1: {0}".format(sha1.hexdigest()))
What we've done is we're updating our hashes of this bad boy in 64kb chunks as we go along with hashlib's handy dandy update method. This way we use a...
Elegant Python function to convert CamelCase to snake_case?
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Flexbox and Internet Explorer 11 (display:flex in ?)
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According to http://caniuse.com/#feat=flexbox:
"IE10 and IE11 default values for flex are 0 0 auto rather than 0 1 auto, as per the draft spec, as of September 2013"
So in plain words, if somewhere in your CSS you have something like this: flex:1 , that is not translated the...
What is the difference between linear regression and logistic regression?
...As regression might actually
produce probabilities that could be less than 0, or even bigger than
1, logistic regression was introduced.
Source: http://gerardnico.com/wiki/data_mining/simple_logistic_regression
Outcome
In linear regression, the outcome (dependent variable) is continuous.
It can...
Concept of void pointer in C programming
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answered Mar 28 '09 at 10:36
Alex BAlex B
73.5k3636 gold badges187187 silver badges270270 bronze badges
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Force CloudFront distribution/file update
...e API Reference.
This is a sample request from the API Reference:
POST /2010-08-01/distribution/[distribution ID]/invalidation HTTP/1.0
Host: cloudfront.amazonaws.com
Authorization: [AWS authentication string]
Content-Type: text/xml
<InvalidationBatch>
<Path>/image1.jpg</Path>...
What are the big improvements between guava and apache equivalent libraries?
..."modern"
Apache Commons is a really mature library, but it's also almost 10 years old, and targets Java 1.4. Guava was open sourced in 2007, targets Java 5, and thus Guava greatly benefits from the Java 5 features: generics, varargs, enums, and autoboxing.
According to the Guava developers, generi...
What is the purpose of setting a key in data.table?
...e other vignettes that we plan to.
I've updated this answer again (Feb 2016) in light of the new on= feature that allows ad-hoc joins as well. See history for earlier (outdated) answers.
What exactly does setkey(DT, a, b) do?
It does two things:
reorders the rows of the data.table DT by the...
Changing the browser zoom level
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answered Jun 28 '09 at 17:48
Eemeli KantolaEemeli Kantola
4,81555 gold badges3131 silver badges4141 bronze badges
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