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Make xargs execute the command once for each line of input
... number of -> in the output examples, those are the number of times the script ./show is executed.
– Tobia
Jan 20 '16 at 11:05
...
bundler vs RVM vs gems vs RubyGems vs gemsets vs system ruby [closed]
...f Ruby (it is itself packaged as a gem), but it a "de facto standard" for most applications (you will not find many people not using it, and no good reasons not to use it, actually).
RVM is a tool allowing you to install multiple versions of Ruby on a machine, switching between them when needed. Th...
How to read a file without newlines?
... only works if the file ends with a newline, otherwise the last line will lose a character.
This assumption is true in most cases (especially for files created by text editors, which often do add an ending newline anyway).
If you want to avoid this you can add a newline at the end of file:
with o...
Linq to Sql: Multiple left outer joins
...in example
var results =
from expense in expenseDataContext.ExpenseDtos
where expense.Id == expenseId //some expense id that was passed in
from category
// left join on categories table if exists
in expenseDataContext.CategoryDtos
.Where(c => c.Id =...
How do I convert a double into a string in C++?
...
The boost (tm) way:
std::string str = boost::lexical_cast<std::string>(dbl);
The Standard C++ way:
std::ostringstream strs;
strs << dbl;
std::string str = strs.str();
Note: Don't forget #include <sstream>
...
Changing password with Oracle SQL Developer
...
I suppose you mean the "Run statement" action. The default short-cut seems to be Ctrl+Enter.
– Álvaro González
Mar 25 '14 at 15:09
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GCC compile error with >2 GB of code
...
WTF? This code must be generated by some script; nobody writes megabytes of code by hand! The same logic that generates the code could also be used to run the computation.
– zvrba
Jun 9 '11 at 19:36
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How to make a countdown timer in Android?
...
MainActivity.java
package com.zeustechnocrats.countdown;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;
import java.text.SimpleDateFormat;
import j...
std::string to float or double
...to convert a string to a double.
You can do it with the stringstream or boost::lexical_cast but those come with a performance penalty.
Ahaha you have a Qt project ...
QString winOpacity("0.6");
double temp = winOpacity.toDouble();
Extra note:
If the input data is a const char*, QByteArray::to...
onSaveInstanceState () and onRestoreInstanceState ()
...
Usually you restore your state in onCreate(). It is possible to restore it in onRestoreInstanceState() as well, but not very common. (onRestoreInstanceState() is called after onStart(), whereas onCreate() is called before onStart().
Use the put methods to store values in onSav...