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Odd behavior when Java converts int to byte?
...int (32 bits) you simply copy the 1 to the left 24 times.
Now, one way to read a negative two's complement number is to start with the least significant bit, move left until you find the first 1, then invert every bit afterwards. The resulting number is the positive version of that number
For exam...
builtins.TypeError: must be str, not bytes
...ary file to base64 & vice versa. Prove in python 3.5.2
import base64
read_file = open('/tmp/newgalax.png', 'rb')
data = read_file.read()
b64 = base64.b64encode(data)
print (b64)
# Save file
decode_b64 = base64.b64decode(b64)
out_file = open('/tmp/out_newgalax.png', 'wb')
out_file.write(deco...
Difference between static class and singleton pattern?
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What makes you say that either a singleton or a static method isn't thread-safe? Usually both should be implemented to be thread-safe.
The big difference between a singleton and a bunch of static methods is that singletons can implement interfaces (or derive from useful base classes, although ...
Reminder - \r\n or \n\r?
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@RobKennedy haha you know I came here and read about return, and thought "great!". Then I read your comment. Now every time I can't remember which key I shouldn't be looking at - I look at my "Enter" key and I think "something's very wrong here"... haha over thinking...
How can I check file size in Python?
....stat() is that you can stat() a file even if you don't have permission to read it. Obviously the seek/tell approach won't work unless you have read permission.
Edit 2
At Jonathon's suggestion, here's a paranoid version. (The version above leaves the file pointer at the end of the file, so if you...
Which equals operator (== vs ===) should be used in JavaScript comparisons?
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In the answers here, I didn't read anything about what equal means. Some will say that === means equal and of the same type, but that's not really true. It actually means that both operands reference the same object, or in case of value types, have the sa...
What is the 'new' keyword in JavaScript?
... to Function.prototype, numbers to Number.prototype, etc.). It can only be read with Object.getPrototypeOf(someObject). There is no other way to set or read this value.
Functions, in addition to the hidden [[prototype]] property, also have a property called prototype, and it is this that you can ac...
How to format numbers as currency string?
...time. also, i recommend modifying the beginning of the return statement to read: return s + '$' + [rest], otherwise you will not get a dollar sign.
– Jason
Jan 31 '11 at 23:58
752
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NoSql vs Relational database
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Documents can be stored in non-relational databases, like CouchDB.
Maybe reading this will help.
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Android: java.lang.SecurityException: Permission Denial: start Intent
...T_COMPLETED"/> <uses-permission android:name="android.permission.READ_CONTACTS"/> <uses-permission android:name="android.permission.READ_SYNC_SETTINGS"/> <uses-permission android:name="android.permission.READ_OWNER_DATA"/> <uses-permission android:name="androi...