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How to set button click effect in Android?
In Android, when I set background image to Button, I can not see any effect on button.
14 Answers
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What does send() do in Ruby?
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send sends a message to an object instance and its ancestors in class hierarchy until some method reacts (because its name matches the first argument).
Practically speaking, those lines are equivalent:
1.send '+', 2
1.+(2)
1 + 2
Note that send bypasses visibility ...
Difference in make_shared and normal shared_ptr in C++
Many google and stackoverflow posts are there on this, but I am not able to understand why make_shared is more efficient than directly using shared_ptr .
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Remove spaces from std::string in C++
...emove spaces from a string in C++? I could loop through all the characters and build a new string, but is there a better way?
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Returning binary file from controller in ASP.NET Web API
...ng ASP.NET MVC's new WebAPI that will serve up binary files, mostly .cab and .exe files.
7 Answers
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Is there a method that works like start fragment for result?
...app, each of the steps I want to show in the overlay are their own screens and activities. There are 3 parts of the sign-in process and each had their own activity that was called with startActivityForResult().
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Regex: ignore case sensitivity
...as my original answer presumed), then you have two options:
Use the (?i) and [optionally] (?-i) mode modifiers:
(?i)G[a-b](?-i).*
Put all the variations (i.e. lowercase and uppercase) in the regex - useful if mode modifiers are not supported:
[gG][a-bA-B].*
One last note: if you're dealing w...
How to check if an NSDictionary or NSMutableDictionary contains a key?
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And what if the key does exist, but it's corresponding value is nil?
– Fyodor Soikin
May 6 '10 at 21:30
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What is hashCode used for? Is it unique?
...an item? For example I want to identify a picture or a song in the device, and check it whereabout. This could be done if the hashcode given for specific items is unique.
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In Vim, how do you search for a word boundary character, like the \b in regexp?
...gexp" means PCRE. It is worth noting that Vim's regex syntax differs from (and apparently predates) PCRE.
See also:
Why does VIM have its own regex syntax?
What's the difference between vim regex and normal regex?
Within vim's regex engine, why are some metacharacters escaped and some are not?
Ca...