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undefined method `source_index' for Gem:Module (NoMethodError)
... What it came down to was ruby-1.9.3-p385 had installed RubyGems version 2.0.2 for me, and 1.9.3-p327 has RubyGems v1.8.23 installed.
Gem.source_index has been deprecated for a while, but since Rails 2.3 is not getting any updates except critical security patches, this will never get fixed. RubyGem...
How to change MySQL column definition?
...-definition
e.g.
ALTER TABLE test MODIFY COLUMN locationExpect VARCHAR(120);
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The order of elements in Dictionary
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edited Oct 24 '10 at 18:38
answered Oct 24 '10 at 10:03
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How do I drop table variables in SQL-Server? Should I even do this?
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answered Apr 13 '11 at 18:01
HoganHogan
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How to change variables value while debugging with LLDB in Xcode?
..._array[3]
expr -f bin -- (index * 8) + 5
expr char c[] = "foo"; c[0]
IMPORTANT NOTE: Because this command takes 'raw' input, if you use any command options you must use ' -- ' between the end of the
command options and the beginning of the raw input.
'expr' is an abbrev...
Convert a python 'type' object to a string
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edited Feb 15 '11 at 20:09
answered Feb 15 '11 at 20:01
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Swift performSelector:withObject:afterDelay: is unavailable [duplicate]
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Swift 4
DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
// your function here
}
Swift 3
DispatchQueue.main.asyncAfter(deadline: .now() + .seconds(0.1)) {
// your function here
}
Swift 2
let dispatchTime: dispatch_time_t = dispatch_time(DISPATCH_TIME_NOW, Int64...
what's the difference between “hadoop fs” shell commands and “hdfs dfs” shell commands?
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140
Following are the three commands which appears same but have minute differences
hadoop fs {arg...
Change GitHub Account username
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edited Apr 6 '17 at 20:43
DimaSan
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answered ...
What is this crazy C++11 syntax ==> struct : bar {} foo {};?
...tandard abstract UDT (User-Defined Type):
struct foo { virtual void f() = 0; }; // normal abstract type
foo obj;
// error: cannot declare variable 'obj' to be of abstract type 'foo'
Let's also recall that we can instantiate the UDT at the same time that we define it:
struct foo { foo() { cout &l...