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Haskell Type vs Data Constructor
...ith how binary trees work, just hang in there. You don't actually need to know how binary trees work, only that this one stores Strings in some way.
We also see that both data constructors take a String argument – this is the String they are going to store in the tree.
But! What if we also wante...
JavaScript, elegant way to check nested object properties for null/undefined [duplicate]
a "problem" which i have every now and then is that i have an object e.g. user = {} and through the course of using the app this gets populated. Let's say somwhere, after an AJAX call or something i do this:
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How do I check which version of NumPy I'm using?
... is actually very nice as it allows you to check the version of numpy even if you have two different versions running on two different versions of python. py -2 -c "import numpy; print(numpy.version.version)" py -3 -c "import numpy; print(numpy.version.version)"
– JSWilson
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Remove an item from array using UnderscoreJS
...ould only iterate over array once instead of potentially twice like here.
If you want to modify the array in-place, you have to use .splice. This is also shown in the other question and undescore doesn't seem to provide any useful function for that.
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Pretty Printing a pandas dataframe
... want an inbuilt function to dump your data into some github markdown, you now have one. Take a look at to_markdown:
df = pd.DataFrame({"A": [1, 2, 3], "B": [1, 2, 3]}, index=['a', 'a', 'b'])
print(df.to_markdown())
| | A | B |
|:---|----:|----:|
| a | 1 | 1 |
| a | 2 | 2 |
| b...
how to change any data type into a string in python
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str is meant to produce a string representation of the object's data. If you're writing your own class and you want str to work for you, add:
def __str__(self):
return "Some descriptive string"
print str(myObj) will call myObj.__str__().
repr is a similar method, which generally produce...
What are good uses for Python3's “Function Annotations”
... tool that organizes methods in a large class based on tags can be written if there is an official syntax.
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Count character occurrences in a string in C++
.... For some reason std::count returns type iterator_traits<InputIt>::difference_type, which for most standard containers is std::ptrdiff_t, not std::size_t.
– Daniel Stevens
Apr 15 at 7:48
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How to fix the “java.security.cert.CertificateException: No subject alternative names present” error
...ytool expects, e.g. openssl x509 -in certs.txt -out certs.der -outform DER
Now you want to import this cert into the system default 'cacert' file. Locate the system default 'cacerts' file for your Java installation. Take a look at How to obtain the location of cacerts of the default java installatio...
Exporting functions from a DLL with dllexport
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If you want plain C exports, use a C project not C++. C++ DLLs rely on name-mangling for all the C++isms (namespaces etc...). You can compile your code as C by going into your project settings under C/C++->Advanced, there ...