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How to get first record in each group using Linq
...er using the method 'FirstOrDefault' in this instance instead." from your example. Only operation on the list i did after the query was passing myResult.ToList() to a method. Using FirstOrDefault solved it though
– aghost
Feb 5 '16 at 10:38
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Wrap long lines in Python [duplicate]
...atenated at compile time, just as in C. http://docs.python.org/reference/lexical_analysis.html#string-literal-concatenation is a good place to start for more info.
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Flatten nested dictionaries, compressing keys
...lly the same way you would flatten a nested list, you just have to do the extra work for iterating the dict by key/value, creating new keys for your new dictionary and creating the dictionary at final step.
import collections
def flatten(d, parent_key='', sep='_'):
items = []
for k, v in d...
How to tell Jackson to ignore a field during serialization if its value is null?
...t the attribute would be shown if the value is not null.
A more complete example is available in my answer to How to prevent null values inside a Map and null fields inside a bean from getting serialized through Jackson.
sh...
C++11 introduced a standardized memory model. What does it mean? And how is it going to affect C++ p
C++11 introduced a standardized memory model, but what exactly does that mean? And how is it going to affect C++ programming?
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Mocha / Chai expect.to.throw not catching thrown errors
I'm having issues getting Chai's expect.to.throw to work in a test for my node.js app. The test keeps failing on the thrown error, but If I wrap the test case in try and catch and assert on the caught error, it works.
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DataTrigger where value is NOT null?
...can make a setter that checks to see if a value is NULL and do something. Example:
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How to reorder data.table columns (without copying)
I'd like to reorder columns in my data.table x , given a character vector of column names, neworder :
2 Answers
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Rails CSRF Protection + Angular.js: protect_from_forgery makes me to log out on POST
... on your domain could read the cookie, your server can be assured that the XHR came from JavaScript running on your domain.
To take advantage of this (CSRF Protection), your server needs to set a token in a JavaScript readable session
cookie called XSRF-TOKEN on first HTTP GET request. On subsequent...
Set markers for individual points on a line in Matplotlib
...ecify the keyword args linestyle and/or marker in your call to plot.
For example, using a dashed line and blue circle markers:
plt.plot(range(10), linestyle='--', marker='o', color='b')
A shortcut call for the same thing:
plt.plot(range(10), '--bo')
Here is a list of the possible line and ...