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How does zip(*[iter(s)]*n) work in Python?
... of n times the same iterator for s.
So, when doing zip(*[iter(s)]*n), it extracts an item from all the three iterators from the list in order. Since all the iterators are the same object, it just groups the list in chunks of n.
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How to convert Set to String[]?
I need to get a String[] out of a Set<String> , but I don't know how to do it. The following fails:
7 Answers
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How to design a product table for many kinds of product where each product has many parameters
...e table for Products, storing attributes common to all product types. One extra column stores a BLOB of semi-structured data, in XML, YAML, JSON, or some other format. This BLOB allows you to store the attributes specific to each product type. You can use fancy Design Patterns to describe this, s...
Autoincrement VersionCode with gradle extra properties
...e release flavor or the debug flavor increase the versionCode. I tried the extra properties, but you can't save them, which means that next time I build it I'm getting the same versionCode.
Any help would be very much appreciated!
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How to model type-safe enum types?
...to get something most closely resembling a Java Enum (i.e. with sensible toString and valueOf methods -- perhaps you are persisting the enum values to a database) you need to modify it a bit. If you had used skaffman's code:
WeekDay.valueOf("Sun") //returns None
WeekDay.Tue.toString //returns We...
How to Store Historical Data
... timestamp indicating the end of that database row
STATUS_CONTROL - single char column indicated status of the row. 'C' indicates current, NULL or 'A' would be historical/archived. We only use this because we can't index on END_DATETIME being NULL
CREATED_BY_WUA_ID - stores the ID of the account tha...
What is the size of an enum in C?
...tum's answer, which references C99, says that an enum may be as small as a char.
– Frank Kusters
Sep 15 '17 at 6:46
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split string only on first instance of specified character
In my code I split a string based on _ and grab the second item in the array.
17 Answers
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Dynamic variable names in Bash
... you give the name, a fact which can be exploited in conjunction with here-strings:
IFS= read -r -d '' "$name" <<< 'babibab'
echo "$var_37" # outputs “babibab\n”
The IFS part and the option -r make sure that the value is assigned as-is, while the option -d '' allows to assign multi-li...
How to post pictures to instagram using API
...ount that you wish to post a photo too
// Set all of the parameters in the string, and then sign it with their API key using SHA-256
$data ='{"device_id":"'.$device_id.'","guid":"'.$guid.'","username":"'.$username.'","password":"'.$password.'","Content-Type":"application/x-www-form-urlencoded; chars...