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Undoing a 'git push'
...0
You may have receive.denyNonFastForwards set on the remote repository. If this is the case, then you will get an error which includes the phrase [remote rejected].
In this scenario, you will have to delete and recreate the branch.
git push origin :alpha-0.3.0
git push origin cc4b63bebb6:refs/h...
Test if string is a number in Ruby on Rails
...is_number? Method.
Create a helper method:
def is_number? string
true if Float(string) rescue false
end
And then call it like this:
my_string = '12.34'
is_number?( my_string )
# => true
Extend String Class.
If you want to be able to call is_number? directly on the string instead of pa...
How to print register values in GDB?
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I get: Invalid register `%eax' And if I just do "info registers" eax does not show up. Yet I am looking at my code assembly in the IDE where a EXC_BAD_ACCESS signal has been generated with the instruction: test %eax, %eax This is in XCode running gdb. Why i...
How to use GROUP_CONCAT in a CONCAT in MySQL
If I have a table with the following data in MySQL:
7 Answers
7
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Find location of a removable SD card
...ny access to them prior to that was through private, unsupported APIs. We now have a quite rich API in the platform that allows applications to make use of SD cards in a supported way, in better ways than they have been able to before: they can make free use of their app-specific storage area witho...
“Prevent saving changes that require the table to be re-created” negative effects
...lar Are there any negative effects / possible drawbacks of doing this? and If so, is the table copy a 100% exact replica of the source table?. Do you have any information regarding those questions?
– tfrascaroli
Jun 14 '17 at 9:33
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How do you find the row count for all your tables in Postgres
...looking for a way to find the row count for all my tables in Postgres. I know I can do this one table at a time with:
15 A...
How can I make a clickable link in an NSAttributedString?
...xt = str;
Edit:
This is not directly about the question but just to clarify, UITextField and UILabel does not support opening URLs. If you want to use UILabel with links you can check TTTAttributedLabel.
Also you should set dataDetectorTypes value of your UITextView to UIDataDetectorTypeLink or...
How Pony (ORM) does its tricks?
...mpare(Getattr(Name('c'), 'country'), [('==', Const('USA'))]))])]))
Let's now see how the decompile() function works.
The decompile() function creates a Decompiler object, which implements the Visitor pattern.
The decompiler instance gets bytecode instructions one-by-one.
For each instruction the ...
How to split a large text file into smaller files with equal number of lines?
...le that I'd like to split into smaller files, also by number of lines. So if my file has around 2M lines, I'd like to split it up into 10 files that contain 200k lines, or 100 files that contain 20k lines (plus one file with the remainder; being evenly divisible doesn't matter).
...