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Builder Pattern in Effective Java
... make the fields final and have getters to get those values. Don't provide setters to those values. In this way your class will be perfectly immutable.
public class NutritionalFacts {
private final int sodium;
private final int fat;
private final int carbo;
public int getSodium(){
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get just the integer from wc in bash
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You can use the cut command to get just the first word of wc's output (which is the line or word count):
lines=`wc -l $f | cut -f1 -d' '`
words=`wc -w $f | cut -f1 -d' '`
share
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What are the differences between the threading and multiprocessing modules?
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What Giulio Franco says is true for multithreading vs. multiprocessing in general.
However, Python* has an added issue: There's a Global Interpreter Lock that prevents two threads in the same process from running Python code at the same...
What is the difference between \r and \n?
...dardized on NL--a character that doesn't even exist in the ASCII character set. In Unicode, NL is U+0085 NEXT LINE, but the actual EBCDIC value is 0x15.
Why did different systems choose different methods? Simply because there was no universal standard. Where your keyboard probably says "Enter",...
Shell command to sum integers, one per line?
I am looking for a command that will accept (as input) multiple lines of text, each line containing a single integer, and output the sum of these integers.
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Git, rewrite previous commit usernames and emails
...ted a bunch of commits to a project on Github, however I realized I hadn't set up the proper email and committer full name on the computer I'm currently using to make my commits and therefore the users avatar and email address are not there.
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Android Paint: .measureText() vs .getTextBounds()
...text!";
Paint p = new Paint();
Rect bounds = new Rect();
p.setTextSize(60);
p.getTextBounds(s, 0, s.length(), bounds);
float mt = p.measureText(s);
int bw = bounds.width();
Log.i("LCG", String.format(
"measureText %f, getTextBounds %d (%s)",
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Redirect stdout to a file in Python?
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If you want to do the redirection within the Python script, setting sys.stdout to a file object does the trick:
import sys
sys.stdout = open('file', 'w')
print('test')
A far more common method is to use shell redirection when executing (same on Windows and Linux):
$ python foo.py ...
Wait for a process to finish
Is there any builtin feature in Bash to wait for a process to finish?
14 Answers
14
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How to automatically generate a stacktrace when my program crashes
...main+0xdb)[0x3a9b91c4bb]
./test[0x40086a]
This shows the load module, offset, and function that each frame in the stack came from. Here you can see the signal handler on top of the stack, and the libc functions before main in addition to main, foo, bar, and baz.
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