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When would you call java's thread.run() instead of thread.start()?
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Taken form the Code Style Java threads FAQ:
Q: What's the difference between a
thread's start() and run() methods?
A: The separate start() and run() methods in the Thread class provide
two ways to create threaded programs.
The sta...
Which HTML5 reset CSS do you use and why? [closed]
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Zapping the default margin and padding on form controls can have unwelcome effects and named font-size keywords don't have entirely consistent behavior across browsers. This is overly simplistic. It also fails to set styles for elements introduced in HTML 5, so they ...
Are there any free Xml Diff/Merge tools available? [closed]
...ased. There are specific diff tools for e.g. CSV files that understand the format it is diffing. The better that understanding, the more effective the diffing can happen. A good XML diff tool would be able to parse the XML, use a schema to determine constraints such as whether order matters for exam...
How can I quickly sum all numbers in a file?
... { print $sum'
The result is a more verbose version of the program, in a form that no one would ever write on their own:
BEGIN { $/ = "\n"; $\ = "\n"; }
LINE: while (defined($_ = <ARGV>)) {
chomp $_;
$sum += $_;
}
sub END {
print $sum;
}
-e syntax OK
Just for giggles, I tried ...
How can I check if a command exists in a shell script? [duplicate]
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Could you put this in the form of an if/else statement (one that doesn't output to the console)?
– Andrew
Sep 23 '11 at 2:37
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Rails 2.3-style plugins and deprecation warnings running task in Heroku
...g to Rails 3.2, and running rake db:migrate gives me several errors of the form:
8 Answers
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How can I generate an MD5 hash?
...e representation in. If you just use string.getBytes() it will use the platform default. (Not all platforms use the same defaults)
import java.security.*;
..
byte[] bytesOfMessage = yourString.getBytes("UTF-8");
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] thedigest = md.digest(by...
Git on Bitbucket: Always asked for password, even after uploading my public SSH key
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I cloned someone's repository form bitbucket, and here is my remotes. manecs-MBP:LocationTracker manec$ git remote -v origin https://Vysh1@bitbucket.org/Vysh1/locationtracker.git (fetch) origin https://Vysh1@bitbucket.org/Vysh1/locationtracker.git (push)
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Strtotime() doesn't work with dd/mm/YYYY format
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Here is the simplified solution:
$date = '25/05/2010';
$date = str_replace('/', '-', $date);
echo date('Y-m-d', strtotime($date));
Result:
2010-05-25
The strtotime documentation reads:
Dates in the m/d/y or d-m-y formats are disambiguated by looking at the separato...
What does $@ mean in a shell script?
... They are often used to simply pass all arguments to another program (thus forming a wrapper around that other program).
The difference between the two syntaxes shows up when you have an argument with spaces in it (e.g.) and put $@ in double quotes:
wrappedProgram "$@"
# ^^^ this is correct and wi...