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Perform .join on value in array of objects
If I have an array of strings, I can use the .join() method to get a single string, with each element separated by commas, like so:
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Can I “multiply” a string (in C#)?
Suppose I have a string, for example,
13 Answers
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Setting Windows PowerShell environment variables
... ****Don't forget the semicolon at the start of the appending string, as seen in @Kevin 's comment. This is pretty obvious, but can be missed if you simply copy/paste the code in the answer and didn't have a semicolon at the end of the existing path. I'll try to submit an edit.
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Javascript regex returning true.. then false.. then true.. etc [duplicate]
... (with exec, test etc.) the first time, you get the first match in a given string. Call them again and you get the next match, and so on until you get no match and it resets to the start of the next string. You can also write regex.lastIndex= 0 to reset this state.
(This is of course an absolutely ...
What is the best way to call a script from another script?
...minal. If you want to be even more specific you can concatenate your input string with local variables, ie.
command = 'python myOtherScript.py ' + sys.argv[1] + ' ' + sys.argv[2]
os.system(command)
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Why doesn't os.path.join() work in this case?
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The latter strings shouldn't start with a slash. If they start with a slash, then they're considered an "absolute path" and everything before them is discarded.
Quoting the Python docs for os.path.join:
If a component is an absolut...
How to append text to an existing file in Java?
...You can use fileWriter with a flag set to true , for appending.
try
{
String filename= "MyFile.txt";
FileWriter fw = new FileWriter(filename,true); //the true will append the new data
fw.write("add a line\n");//appends the string to the file
fw.close();
}
catch(IOException ioe)
{
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How to serve static files in Flask
...#url-route-registrations). In a nutshell <path> is equivalent to <string:path>, and because you want Flask to ensure a path-like parameter you ask for <path:path>.
– b4stien
Mar 26 '17 at 18:40
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What is “callback hell” and how and why does RX solve it?
...appens after B is called listening to 'aFinished'. You can then easily add extra steps or extend this kind of behaviour, and can easily test that your code executes in order by merely broadcasting events in your test case.
s...
How to compute the similarity between two text documents?
...idf
pairwise_similarity = tfidf * tfidf.T
or, if the documents are plain strings,
>>> corpus = ["I'd like an apple",
... "An apple a day keeps the doctor away",
... "Never compare an apple to an orange",
... "I prefer scikit-learn to Orange",
... ...