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Builder Pattern in Effective Java
I have recently started to read Effective Java by Joshua Bloch. I found the idea of the Builder pattern [Item 2 in the book] really interesting. I tried to implement it in my project but there were compilation errors. Following is in essence what I was trying to do:
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Android and setting width and height programmatically in dp units
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The formula is in the docs. For further reading, go to section 3 of developer.android.com/guide/practices/…
– SK9
Mar 20 '11 at 1:49
35
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python: SyntaxError: EOL while scanning string literal
...long is this string really?
I suspect there is a limit to how long a line read from a file or from the commandline can be, and because the end of the line gets choped off the parser sees something like s1="some very long string.......... (without an ending ") and thus throws a parsing error?
You c...
Where and why do I have to put the “template” and “typename” keywords?
...le:
boost::function< int() > f;
It might look obvious to a human reader. Not so for the compiler. Imagine the following arbitrary definition of boost::function and f:
namespace boost { int function = 0; }
int main() {
int f = 0;
boost::function< int() > f;
}
That's actually ...
How to repeat last command in python interpreter shell?
...ironment variable is set to this file path.
# python startup file
import readline
import rlcompleter
import atexit
import os
# tab completion
readline.parse_and_bind('tab: complete')
# history file
histfile = os.path.join(os.environ['HOME'], '.pythonhistory')
try:
readline.read_histor...
Convert string to a variable name
...ist_files('path to multiple csv files saved on drive')
assign(varnames[1], read.csv(file_names[1]) # This will assign the variable
From there, if you try to print the variable varnames[1], it returns 'jan'.
To work around this, you need to do
print(get(varnames[1]))
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Django DB Settings 'Improperly Configured' Error
... Thanks! That wasn't quite clear to me in the documentation, or maybe I read it & forgot by the time I needed to do it.
– Zamphatta
Mar 24 '13 at 0:13
6
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What's the difference between utf8_general_ci and utf8_unicode_ci?
...les based on Unicode 9.0 - and with no equivalent _general variant. People reading this now should probably use one of these newer collations instead of either _unicode or _general. Much of what's written below is not of much interest anymore if you can use one of the newer collations instead.
Key d...
Difference between int[] array and int array[]
...t. I would not recommend either of these multiple declarations. Easiest to read would (probably) be:
int[] a;
int[] b;
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Table name as variable
...at need to be considered and they are hard to mantain I recommend that you read : The curse and blessings of dynamic SQL
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