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Map vs Object in JavaScript
I just discovered chromestatus.com and, after losing several hours of my day, found this feature entry :
12 Answers
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Android Studio - local path doesn't exist
After updating Android Studio to 0.2.4 I can't get my project to deploy. There is a complete mismatch of the apk filename.
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How do I replace a character at a particular index in JavaScript?
I have a string, let's say Hello world and I need to replace the char at index 3. How can I replace a char by specifying a index?
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Convert columns to string in Pandas
...e looking for the to_json function, which will convert keys to valid json (and therefore your keys to strings):
In [11]: df = pd.DataFrame([['A', 2], ['A', 4], ['B', 6]])
In [12]: df.to_json()
Out[12]: '{"0":{"0":"A","1":"A","2":"B"},"1":{"0":2,"1":4,"2":6}}'
In [13]: df[0].to_json()
Out[13]: '{"...
Android: Difference between Parcelable and Serializable?
Why does Android provide 2 interfaces for serializing objects? Do Serializable objects interopt with Android Binder and AIDL files?
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JavaScript pattern for multiple constructors
...ors.
If you want a function to behave differently depending on the number and types of parameters you pass to it, you'll have to sniff them manually. JavaScript will happily call a function with more or fewer than the declared number of arguments.
function foo(a, b) {
if (b===undefined) // par...
How can I find the length of a number?
...34567;
x.toString().length;
This process will also work forFloat Number and for Exponential number also.
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Access nested dictionary items via a list of keys?
...ataDict, mapList):
return reduce(operator.getitem, mapList, dataDict)
and reuse getFromDict to find the location to store the value for setInDict():
def setInDict(dataDict, mapList, value):
getFromDict(dataDict, mapList[:-1])[mapList[-1]] = value
All but the last element in mapList is need...
Fast way to get image dimensions (not filesize)
I'm looking for a fast way to get the height and width of an image in pixels. It should handle at least JPG, PNG and TIFF, but the more the better. I emphasize fast because my images are quite big (up to 250 MB) and it takes soooo long to get the size with ImageMagick's identify because it obv...
Java Generate Random Number Between Two Given Values [duplicate]
I would like to know how to generate a random number between two given values.
7 Answers
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