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How to flatten only some dimensions of a numpy array
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# One shape dimension can be -1.
# In this case, the value is inferred from
# the length of the array and remaining dimensions.
>>> another_arr = arr.reshape(-1, arr.shape[-1])
>>> another_arr.shape
# (5000, 25)
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Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array
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This is my answer from the duplicate thread (!):
When writing this entry 2014 - all examples were for-loops or jQuery. Javascript has the perfect tools for this: sort, map and reduce.
Find duplicate items
var names = ['Mike', 'Matt', '...
How do I define and use an ENUM in Objective-C?
...about it here: http://nshipster.com/ns_enum-ns_options/
Here's an example from my own code using NS_OPTIONS, I have an utility that sets a sublayer (CALayer) on a UIView's layer to create a border.
The h. file:
typedef NS_OPTIONS(NSUInteger, BSTCMBorder) {
BSTCMBOrderNoBorder = 0,
BST...
How do I negate a condition in PowerShell?
... @DavidA.Gray Ruby has unless as keyword (just like if) but most user from other languages hate it.
– Franklin Yu
Nov 27 '18 at 5:09
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Cannot get to $rootScope
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@vojta But what if I need to pass parameter from outside and use it in config ? say root path within asp.net app ? I just don't want to use global variables and wanted to use ng-init='root:<%= myroot %>' and use root value into module.config.
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Doing something before program exit
... @RacecaR: indeed; the point of killing a process is to stop it dead. From the docs: Note The exit function is not called when the program is killed by a signal, when a Python fatal internal error is detected, or when os._exit() is called.
– Katriel
Oct 3 ...
Read XML file into XmlDocument
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Use XmlDocument.Load() method to load XML from your file. Then use XmlDocument.InnerXml property to get XML string.
XmlDocument doc = new XmlDocument();
doc.Load("path to your file");
string xmlcontents = doc.InnerXml;
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In Clojure, when should I use a vector over a list, and the other way around?
...s even though they are different. the (seq ) function will make a sequence from a lot of different things including lists, and you can then feed that seq to any of the plethora of functions that do nifty things with seqs.
user> (class (list 1 2 3))
clojure.lang.PersistentList
user> (class (s...
Regular expression to return text between parenthesis
...and the last closing parenthesis to get (a+b)/(c+d), because find searches from the left of the string, and would stop at the first closing parenthesis.
To fix that, you need to use rfind for the second part of the operation, so it would become
st[st.find("(")+1:st.rfind(")")]
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Check if a string is a date value
...his problem in an app I'm working on right now:
updated based on feedback from krillgar:
var isDate = function(date) {
return (new Date(date) !== "Invalid Date") && !isNaN(new Date(date));
}
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