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sizeof single struct member in C
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The second form is very nice (and conceptually clean in that it does not involve null pointers), but you should mention that it's not possible in pre-C99 compilers.
– R.. GitHub STOP HELPING ICE
Au...
iOS forces rounded corners and glare on inputs
iOS devices add a lot of annoying styles on form inputs, particularly on input[type=submit]. Shown below are the same simple search form on a desktop browser, and on an iPad.
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Create a “with” block on several context managers? [duplicate]
...in 3.1 says: "The one advantage of this function over the multiple manager form of the with statement is that argument unpacking allows it to be used with a variable number of context managers as follows: with nested(*managers): do_something()"
– interjay
Jun 1...
Cosine Similarity between 2 Number Lists
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You can use cosine_similarity function form sklearn.metrics.pairwise docs
In [23]: from sklearn.metrics.pairwise import cosine_similarity
In [24]: cosine_similarity([[1, 0, -1]], [[-1,-1, 0]])
Out[24]: array([[-0.5]])
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what is reverse() in Django
...) and you want to redirect the user to /foo/ (often the case on successful form submission).
You could just do:
return HttpResponseRedirect('/foo/')
But what if you want to change the url in future? You'd have to update your urls.py and all references to it in your code. This violates DRY (Don't...
How to remove all .svn directories from my application directories
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find . -type d -name .svn -print0|xargs -0 rm -rf
The first two -exec forms both call rm for each folder being deleted, so if you had 1,000,000 folders, rm would be invoked 1,000,000 times. This is certainly less than ideal. Newer implementations of rm allow you to conclude the command with a...
$_POST vs. $_SERVER['REQUEST_METHOD'] == 'POST'
...ient sends you a request method of 'post' or 'Post' when they intend to perform a POST request then they're in violation of spec, since HTTP methods are case-sensitive according to spec and the spec only defines the POST method, not e.g. the post or Post or pOsT method. I go into more detail about t...
What are the differences between delegates and events?
...icle by John Skeet.
Example 1: Using public delegate
Suppose I have a WinForms app with a single drop-down box. The drop-down is bound to an List<Person>. Where Person has properties of Id, Name, NickName, HairColor. On the main form is a custom user control that shows the properties of that...
Python Create unix timestamp five minutes in the future
..." value 5 minutes in the future, but I have to supply it in UNIX Timestamp format. I have this so far, but it seems like a hack.
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Apply a function to every row of a matrix or a data frame
...hat has the same number of rows, you can predefine it and use the object[] form as illustrated (otherwise the returned value will be simplified to a vector):
bvnormdens <- function(x=c(0,0),mu=c(0,0), sigma=c(1,1), rho=0){
exp(-1/(2*(1-rho^2))*(x[1]^2/sigma[1]^2+
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