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How to append to New Line in Node.js
...ng to Append data to a Log file using Node.js and that is working fine but it is not going to the next line. \n doesn't seem to be working in my function below. Any suggestions?
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Git SVN error: a Git process crashed in the repository earlier
I was just trying to commit changes to the Git master. From what I have read, it seems that the idea is to delete the lock file. The message says:
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Adding a background image to a element
Is it possible to make a <div> element contain a background image, and if so, how would I go about doing this?
9 An...
Alternatives to java.lang.reflect.Proxy for creating proxies of abstract classes (rather than interf
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It can be done using Javassist (see ProxyFactory) or CGLIB.
Adam's example using Javassist:
I (Adam Paynter) wrote this code using Javassist:
ProxyFactory factory = new ProxyFactory();
factory.setSuperclass(Dog.class);
fac...
How to list files in a directory in a C program?
I'm trying to write an ftp server on Linux. In this matter how can I list files in the directory on terminal by a C program? Maybe I can use exec function to run find command but I want file name as a string to send client program. How can I do this?
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How to get current timestamp in string format in Java? “yyyy.MM.dd.HH.mm.ss”
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Replace
new Timestamp();
with
new java.util.Date()
because there is no default constructor for Timestamp, or you can do it with the method:
new Timestamp(System.currentTimeMillis());
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What is the difference between `git fetch origin` and `git remote update origin`?
In response to a question about pulling one commit at a time from a git repository , I was recommended to use git remote update instead of git fetch . I have read both man pages but cannot say I understood either in its entirety.
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Django REST framework: non-model serializer
...r services. The REST interface, which I need to implement, is not working with my models directly (I mean the get, put, post, delete operations). Instead, it provides other services with some calculation results. On a request my service makes some calculations and just returns the results back (does...
Applying function with multiple arguments to create a new pandas column
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1 20 30 600
2 30 10 300
or vectorize arbitrary function in general case:
>>> def fx(x, y):
... return x*y
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>>> df['new_column'] = np.vectorize(fx)(df['A'], df['B'])
>>> df
A B new_column
0 10 20 200
1 20 30 ...
Operation on every pair of element in a list
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Check out product() in the itertools module. It does exactly what you describe.
import itertools
my_list = [1,2,3,4]
for pair in itertools.product(my_list, repeat=2):
foo(*pair)
This is equivalent to:
my_list = [1,2,3,4]
for x in my_list:
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