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How to rollback a specific migration?
I have the following migration file db\migrate\20100905201547_create_blocks.rb
14 Answers
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AngularJS does not send hidden field value
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288
You cannot use double binding with hidden field.
The solution is to use brackets :
<input ...
Make a UIButton programmatically in Swift
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205
You're just missing the colon at the end of the selector name. Since pressed takes a parameter...
How to delete files/subfolders in a specific directory at the command prompt in Windows
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259
You can use this shell script to clean up the folder and files within C:\Temp source:
del /q ...
Smooth scrolling when clicking an anchor link
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29 Answers
29
Active
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WHERE vs HAVING
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325
Why is it that you need to place columns you create yourself (for example "select 1 as numbe...
Nesting await in Parallel.ForEach
...to the TransformBlock.
In code:
var ids = new List<string> { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10" };
var getCustomerBlock = new TransformBlock<string, Customer>(
async i =>
{
ICustomerRepo repo = new CustomerRepo();
return await repo.GetCustomer...
The simplest way to comma-delimit a list?
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227
Java 8 and later
Using StringJoiner class :
StringJoiner joiner = new StringJoiner(",");
for...
Where should @Service annotation be kept? Interface or Implementation?
...e then you want to use that interface for the injection point type.
claim 2: The purpose of an interface is that it define a contract that can been implemented by several implementations. On the other side you have your injection point (@Autowired). Having just one interface and only one class that...
How to diff one file to an arbitrary version in Git?
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You can do:
git diff master~20:pom.xml pom.xml
... to compare your current pom.xml to the one from master 20 revisions ago through the first parent. You can replace master~20, of course, with the object name (SHA1sum) of a commit or any of the many o...