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Different ways of loading a file as an InputStream
...re calling it from. For example calling, String.class.getResourceAsStream("myfile.txt") will look for a file in your classpath at the following location: "java/lang/myfile.txt". If your path starts with a /, then it will be considered an absolute path, and will start searching from the root of the c...
How to force vim to syntax-highlight a file as html?
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In my experience this approach will fail if you give an exact filename e.g. .myspecialdotfile. It needs a star in it somewhere to work, even if it's theoretically not necessary.
– SeldomNeedy
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Immutable vs Mutable types
...loat object is considered to be immutable, with this type of example from my book:
16 Answers
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How to get the size of a string in Python?
... length of the string, you can use len():
>>> s = 'please answer my question'
>>> len(s) # number of characters in s
25
If you need the size of the string in bytes, you need sys.getsizeof():
>>> import sys
>>> sys.getsizeof(s)
58
Also, don't call your strin...
Display a float with two decimal places in Python
...is much more readable.
>>> foobar = 3.141592
>>> print(f'My number is {foobar:.2f} - look at the nice rounding!')
My number is 3.14 - look at the nice rounding!
You can see in this example we format with decimal places in similar fashion to previous string formatting methods.
NB ...
Post-increment and pre-increment within a 'for' loop produce same output [duplicate]
...t needs to use the more expensive post-incrementation version if you write myiterator++.
Three reasons why you should pre-increment:
You won't have to think about whether the variable/object might have an overloaded post-incrementation method (for example in a template function) and treat it diff...
Why is f(i = -1, i = -1) undefined behavior?
...could segfault. Or reformat your hard drive.
But now you ask: "What about my example? I used the same value (-1) for both assignments. What could possibly be unclear about that?"
You are correct...except in the way the C++ standards committee described this.
If a side effect on a scalar object...
Determine if a function exists in bash
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Because I had posted my answer using declare first :-)
– Allan Wind
Sep 20 '08 at 18:47
6
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How to print SQL statement in codeigniter model
I have a sql statement in my model,
14 Answers
14
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if A vs if A is not None:
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@gnibbler Not according to my tests. if object(): pass is ~0.130 usec per loop, while if object() is not None: pass is ~0.135 usec. Anyway, you should not use performance to choose between these two, but rather look at the differences in how they work,...