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How can I print literal curly-brace characters in python string and also use .format on it?
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You need to double the {{ and }}:
>>> x = " {{ Hello }} {0} "
>>> print(x.format(42))
' { Hello } 42 '
Here's the relevant part of the Python documentation for format string syntax:
Format strings contain “replacement fields” surrounded by curly braces {}. Anythi...
Left padding a String with Zeros [duplicate]
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20 Answers
20
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How to tell if JRE or JDK is installed
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160
You can open up terminal and simply type
java -version // this will check your jre version
jav...
What does template mean?
...Factorial<N - 1>::value };
};
template <>
struct Factorial<0>
{
enum { value = 1 };
};
// Factorial<4>::value == 24
// Factorial<0>::value == 1
void foo()
{
int x = Factorial<4>::value; // == 24
int y = Factorial<0>::value; // == 1
}
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Best way to alphanumeric check in JavaScript
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10 Answers
10
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Find the extension of a filename in Ruby
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That's really basic stuff:
irb(main):002:0> accepted_formats = [".txt", ".pdf"]
=> [".txt", ".pdf"]
irb(main):003:0> File.extname("example.pdf") # get the extension
=> ".pdf"
irb(main):004:0> accepted_formats.include? File.extname("example.pdf")
=...
How do I check out a specific version of a submodule using 'git submodule'?
...ing the change to the parent repository.
$ cd submodule
$ git checkout v2.0
Previous HEAD position was 5c1277e... bumped version to 2.0.5
HEAD is now at f0a0036... version 2.0
git-status on the parent repository will now report a dirty tree:
# On branch dev [...]
#
# modified: submodule (n...
How to set enum to null
...e for enums that cannot be null by having the FIRST value in the enum (aka 0) be the default value. For example in a case of color None.
public Color myColor = Color.None;
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Python idiom to return first item or None
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answered Dec 13 '08 at 23:31
jfsjfs
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What's the difference between “mod” and “remainder”?
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edited Jul 18 '13 at 20:13
Grijesh Chauhan
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