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How do I get a substring of a string in Python?
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>>> x[2:-2]
'llo Worl'
Python calls this concept "slicing" and it works on more than just strings. Take a look here for a comprehensive introduction.
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What's the difference between SCSS and Sass?
...m what I've been reading, Sass is a language that makes CSS more powerful with variable and math support.
13 Answers
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Save image from URL by paperclip
...insecure because a user could call user.picture_from_url('/etc/password'). It's probably fine in most situations though.
– David Tuite
Oct 11 '13 at 9:16
1
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matplotlib does not show my drawings although I call pyplot.show()
... in directory ~/.matplotlib/. In this case, the following code shows where it is:
>>> import matplotlib
>>> matplotlib.matplotlib_fname()
In [1]: import matplotlib.pyplot as p
In [2]: p.plot(range(20),range(20))
Out[2]: [<matplotlib.lines.Line2D object at 0xa64932c>]
I...
What is the difference between Tomcat, JBoss and Glassfish?
...ing to look into Enterprise Java and the book I am following mentions that it will use JBoss. Netbeans ships with Glassfish. I have used Tomcat in the past.
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map function for objects (instead of arrays)
...yObject);
// => { 'a': 2, 'b': 4, 'c': 6 }
But you could easily iterate over an object using for ... in:
var myObject = { 'a': 1, 'b': 2, 'c': 3 };
for (var key in myObject) {
if (myObject.hasOwnProperty(key)) {
myObject[key] *= 2;
}
}
console.log(myObject);
// { '...
Java SE 6 vs. JRE 1.6 vs. JDK 1.6 - What do these mean?
...any different Java terms floating around. I need to install the JDK 1.6. It was my understanding that Java 6 == Java 1.6. However, when I install Java SE 6, I get a JVM that reports as version 11.0! Who can solve the madness?
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GetType() can lie?
...etType() not be virtual really ensured that an object could not lie about its Type .
8 Answers
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Passing additional variables from command line to make
...nment - each environment variable is transformed into a makefile variable with the same name and value.
You may also want to set -e option (aka --environments-override) on, and your environment variables will override assignments made into makefile (unless these assignments themselves use the overr...