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Pip freeze vs. pip list
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In other words you can run:
pip freeze > frozen-requirements.txt on one machine and then later on a different machine or on a clean environment you can do:
pip install -r frozen-requirements.txt
and you'll get the an identical environment with the exact same dependencies installed as you had ...
How to create a new object instance from a Type
One may not always know the Type of an object at compile-time, but may need to create an instance of the Type .
12 Ans...
How to give System property to my test via Gradle and -D
...re seeing.
You can use the systemProperty in your test block as you have done but base it on the incoming gradle property by passing it with it -P:
test {
systemProperty "cassandra.ip", project.getProperty("cassandra.ip")
}
or alternatively, if you are passing it in via -D
test {
system...
Retain precision with double in Java
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As others have mentioned, you'll probably want to use the BigDecimal class, if you want to have an exact representation of 11.4.
Now, a little explanation into why this is happening:
The float and double primitive types in Java are floating po...
How to make jQuery to not round value returned by .width()?
...ting I found that this method does not work for hidden elements (display: none).
– Jory Hogeveen
Nov 7 '17 at 17:55
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PHP Regex to check date is in YYYY-MM-DD format
...ch all valid dates. If you want it to only be valid when it contains just one date and nothing else, then wrap it in ^( )$ like so:
^(((((1[26]|2[048])00)|[12]\d([2468][048]|[13579][26]|0[48]))-((((0[13578]|1[02])-(0[1-9]|[12]\d|3[01]))|((0[469]|11)-(0[1-9]|[12]\d|30)))|(02-(0[1-9]|[12]\d))))|(...
How find all unused classes in Intellij Idea?
... same answer within a couple of minutes to several questions, suggest that one of them ios a duplicate of the other. please mark them as such.
– Jaap
Jul 7 '16 at 11:24
3
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C++ semantics of `static const` vs `const`
...while you're not looking. If the variable was defined with const, then no one can change it after initialization but initialization can still be arbitrarily complex.
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How to detect my browser version and operating system using JavaScript?
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I'm sad to say: We are sh*t out of luck on this one.
I'd like to refer you to the author of WhichBrowser: Everybody lies.
Basically, no browser is being honest. No matter if you use Chrome or IE, they both will tell you that they are "Mozilla Netscape" with Gecko and Saf...
Getting key with maximum value in dictionary?
...to have another key-value pair 'd': 3000 that this method will only return one of the two even though they both have the maximum value.
>>> import operator
>>> stats = {'a':1000, 'b':3000, 'c': 100, 'd':3000}
>>> max(stats.iteritems(), key=operator.itemgetter(1))[0]
'b' ...