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Git SVN error: a Git process crashed in the repository earlier
...ck file like Schwern stated will solve this
problem.
You can remove it by running rm -f ./.git/index.lock
The rm command is used to remove (delete) files and directories.
The -f stands for force which tells your computer to remove the files without prompting for confirmation
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Is there a difference between “==” and “is”?
...e if two variables point to the same object, == if the objects referred to by the variables are equal.
>>> a = [1, 2, 3]
>>> b = a
>>> b is a
True
>>> b == a
True
# Make a new copy of list `a` via the slice operator,
# and assign it to variable `b`
>>>...
How to check if a Ruby object is a Boolean
...check if an object is a boolean easily. Is there something like this in Ruby?
9 Answers
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How to use java.String.format in Scala?
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You can simplify by applying format directly to the string literal: "Hello %s, isn't %s cool?".format("Ivan", "Scala")
– sotrh
Aug 26 '14 at 18:57
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How to perform case-insensitive sorting in JavaScript?
... +1 for not calling toLowerCase() when localeCompare already does that by default in some cases. You can read more about the parameters to pass to it here: developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…
– Milimetric
Sep 12 '14 at 15:26
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Assigning default value while creating migration file
...n also manually update the migration file prior to running rake db:migrate by adding the options to add_column:
add_column :tweet, :retweets_count, :integer, :null => false, :default => 0
... and read Rails API
share...
Prevent ViewPager from destroying off-screen views
...rst one is not destroyed, and vice-versa.
mViewPager = (ViewPager)findViewById(R.id.pager);
mViewPager.setOffscreenPageLimit(2);
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How to get current timestamp in string format in Java? “yyyy.MM.dd.HH.mm.ss”
...s such as java.util.Date and java.sql.Timestamp are now legacy, supplanted by the java.time classes built into Java 8 and later. See Tutorial by Oracle.
– Basil Bourque
Dec 24 '18 at 20:01
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Scala: What is a TypeTag and how do I use it?
...String in type pattern List[String]↩
is unchecked since it is eliminated by erasure
case _: List[String] => "list of strings"
^
<console>:24: warning: non-variable type argument Foo in type pattern List[Foo]↩
is unchecked since it is eliminated by erasure
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PHP: exceptions vs errors?
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@DaveRandom E_NOTICE, E_WARNING are not "errors" by definition are they? I always thought them as 'messages' PHP displays to notify programmer that something might be wrong with the code s/he wrote.
– slhsen
Aug 14 '15 at 8:57
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