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Fastest check if row exists in PostgreSQL
...nch of rows that I need to insert into table, but these inserts are always done in batches. So I want to check if a single row from the batch exists in the table because then I know they all were inserted.
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windows service vs scheduled task
What are the cons and pros of windows services vs scheduled tasks for running a program repeatedly (e.g. every two minutes)?
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How to organize a node app that uses sequelize?
...module at the app.js file.
Get the model classes from the singleton module do not use require on your model files, load the models from the singleton instead.
The longer story
Here is a more detailed description of this solution with the corresponding source code:
http://jeydotc.github.io/blog/2012...
How do HTML parses work if they're not using regexp?
...ct something from some HTML string and the first answer/comment is always "Don't use RegEx to parse HTML, lest you feel the wrath!" (that last part is sometimes omitted).
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Static nested class in Java, why?
... enclosing class, even if they are declared private. Static nested classes do not have access to other members of the enclosing class.
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Note: A static nested class interacts with the instance members of its outer class (and other classes) just like any other top-level class. In effect, a s...
Ruby: How to iterate over a range, but in set increments?
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See http://ruby-doc.org/core/classes/Range.html#M000695 for the full API.
Basically you use the step() method. For example:
(10..100).step(10) do |n|
# n = 10
# n = 20
# n = 30
# ...
end
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CSS checkbox input styling
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With CSS 2 you can do this:
input[type='checkbox'] { ... }
This should be pretty widely supported by now. See support for browsers
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How to get the day of week and the month of the year?
I don't know much about Javascript, and the other questions I found are related to operations on dates, not only getting the information as I need it.
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How to overload __init__ method based on argument type?
...ham"}).data
[('spam', 'ham')]
The reason it's neater is that there is no doubt about what type is expected, and you aren't forced to guess at what the caller intended for you to do with the datatype it gave you. The problem with isinstance(x, basestring) is that there is no way for the caller to t...
How do I find out which computer is the domain controller in Windows programmatically?
I am looking for a way to determine what the Name/IP Address of the domain controller is for a given domain that a client computer is connected to.
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