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Parsing a JSON string in Ruby
...son"
string = '{"desc":{"someKey":"someValue","anotherKey":"value"},"main_item":{"stats":{"a":8,"b":12,"c":10}}}'
parsed = JSON.parse(string) # returns a hash
p parsed["desc"]["someKey"]
p parsed["main_item"]["stats"]["a"]
# Read JSON from a file, iterate over objects
file = open("shops.json")
js...
How to merge dictionaries of dictionaries?
...rge1(d1, d2):
'''return new merged dict of dicts'''
for k, v in d1.items(): # in Python 2, use .iteritems()!
if k in d2:
d2[k] = rec_merge1(v, d2[k])
d3 = d1.copy()
d3.update(d2)
return d3
def rec_merge2(d1, d2):
'''update first dict with second recursive...
How do negative margins in CSS work and why is (margin-top:-5 != margin-bottom:5)?
...
THE BEST answer. This one is also explaining the "why", whereas the other answers only explain the "how".
– Amir Hossein Ahmadi
Oct 27 '19 at 13:52
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powershell - extract file name and extension
...hing like this based on your needs:
$a = dir .\my.file.xlsx # or $a = get-item c:\my.file.xlsx
$a
Directory: Microsoft.PowerShell.Core\FileSystem::C:\ps
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a--- 25/01/10 11.51 624 my...
Why the switch statement cannot be applied on strings?
...have built in text for error logging as well.
– Dirk Bester
May 20 '16 at 18:18
You can also avoid the enum with lambd...
Flatten list of lists [duplicate]
...the unraveled loop and eliminates the append calls!
If you have multiple items in a sublist the list comp will even flatten that. ie
>>> list_of_lists = [[180.0, 1, 2, 3], [173.8], [164.2], [156.5], [147.2], [138.2]]
>>> flattened = [val for sublist in list_of_lists for val in ...
Remove an onclick listener
...
Just put,it has worked for me
itemView.setOnClickListener(null);
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Auto margins don't center image in page
... answer if you elaborated on what is required for margin:auto to center an item in the flow. (display:block or display:table, position:static or position:relative, etc.)
– Phrogz
Apr 20 '11 at 17:26
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Array or List in Java. Which is faster?
...swered.
There are a few things you can do with an array:
create it
set an item
get an item
clone/copy it
General conclusion
Although get and set operations are somewhat slower on an ArrayList (resp. 1 and 3 nanosecond per call on my machine), there is very little overhead of using an ArrayList vs....
Adding a new array element to a JSON object
...
First we need to parse the JSON object and then we can add an item.
var str = '{"theTeam":[{"teamId":"1","status":"pending"},
{"teamId":"2","status":"member"},{"teamId":"3","status":"member"}]}';
var obj = JSON.parse(str);
obj['theTeam'].push({"teamId":"4","status":"pending"});
str = ...