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What is the difference between substr and substring?

...t it to the end of the string (no second argument) – André Chalella Oct 20 '15 at 2:48 This is so ridiculous that I a...
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How to work with Git branches and Rails migrations

I am working on a rails app with quite a few git branches and many of them include db migrations. We try to be careful but occasionally some piece of code in master asks for a column that got removed/renamed in another branch. ...
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Convert to binary and keep leading zeros in Python

...Specification mini language. The # makes the format include the 0b prefix, and the 010 size formats the output to fit in 10 characters width, with 0 padding; 2 characters for the 0b prefix, the other 8 for the binary digits. This is the most compact and direct option. If you are putting the result...
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When splitting an empty string in Python, why does split() return an empty list while split('\n') re

I am using split('\n') to get lines in one string, and found that ''.split() returns an empty list, [] , while ''.split('\n') returns [''] . Is there any specific reason for such a difference? ...
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How can I provide multiple conditions for data trigger in WPF?

...ions> <Condition Binding="{Binding Path=Name}" Value="Portland" /> <Condition Binding="{Binding Path=State}" Value="OR" /> </MultiDataTrigger.Conditions> <Setter Property="Background" Value="Cyan" /> </MultiDataTrigger> &...
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How to design a product table for many kinds of product where each product has many parameters

...stead, one table per product type, storing both common product attributes, and product-specific attributes. Serialized LOB: One table for Products, storing attributes common to all product types. One extra column stores a BLOB of semi-structured data, in XML, YAML, JSON, or some other format. This...
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How do lexical closures work?

.... This is exactly the problem, though - in this environment, i is mutated, and the closures all refer to the same i. Here is the best solution I can come up with - create a function creater and invoke that instead. This will force different environments for each of the functions created, with a dif...
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Android and XMPP: Currently available solutions [closed]

Which XMPP library would be the best choice nowadays for Android development? 7 Answers ...
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split string only on first instance - java

... The limit parameter controls the number of times the pattern is applied and therefore affects the length of the resulting array. If the limit n is greater than zero then the pattern will be applied at most n - 1 times, the array's length will be no greater than n, and the array's last entry will...
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JavaScript variable number of arguments to function

... Tnx. It is great for parsing Strings from android native code to javascript in a Webview. – Johan Hoeksma Aug 31 '13 at 16:06 4 ...