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Objective-C and Swift URL encoding
...tersInString:@" \"#%/:<>?@[\\]^`{|}"] invertedSet];
Creating a Base64
In the case of Base64 characterset:
NSCharacterSet *URLBase64CharacterSet = [[NSCharacterSet characterSetWithCharactersInString:@"/+=\n"] invertedSet];
For Swift 3.0:
var escapedString = originalString.addingPe...
What is the difference between float and double?
...E double-precision. Nevertheless, for most architectures (gcc, MSVC; x86, x64, ARM) float is indeed a IEEE single-precision floating point number (binary32), and double is a IEEE double-precision floating point number (binary64).
...
ng-model for `` (with directive DEMO)
...ulate your model with the contents of your file encoded ad a data-uri (base64).
Check out a working demo here:
http://plnkr.co/CMiHKv2BEidM9SShm9Vv
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Installing PG gem on OS X - failure to build native extension
...sion 8.x installed.
So I run the following command:
ARCHFLAGS="-arch x86_64" gem install pg
and this worked for me, I hope this helps someone :)
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Converting strings to floats in a DataFrame
... [14]: df.convert_objects(convert_numeric=True).dtypes
Out[14]:
A float64
B float64
dtype: object
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Uncaught Error: SECURITY_ERR: DOM Exception 18 when I try to set a cookie
...
Eli GreyEli Grey
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Is there a /dev/null on Windows?
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64
According to this message on the GCC mailing list, you can use the file "nul" instead of /dev/n...
Ruby max integer
...t to how big they can be.
If you are looking for the machine's size, i.e. 64- or 32-bit, I found this trick at ruby-forum.com:
machine_bytes = ['foo'].pack('p').size
machine_bits = machine_bytes * 8
machine_max_signed = 2**(machine_bits-1) - 1
machine_max_unsigned = 2**machine_bits - 1
If you ...
Hashing a dictionary?
..._dict__)) # 1209812346789
foo.a = 1
print (make_hash(foo.__dict__)) # -78956430974785
Alas, when you attempt to do the same thing with the class itself:
print (make_hash(Foo.__dict__)) # TypeError: unhashable type: 'dict_proxy'
The class __dict__ property is not a normal dictionary:
print (typ...
Set transparent background of an imageview on Android
...
64
@AnhSirkDasarp Not only from 01 to 99, as the rest of the numbers these are also hexadecimal so you can put anything from 00 to ff. For fif...