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How to parse a JSON string into JsonNode in Jackson?
...adTree can take a string so you can simplify it to:
ObjectMapper mapper = new ObjectMapper();
JsonNode actualObj = mapper.readTree("{\"k1\":\"v1\"}");
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Index on multiple columns in Ruby on Rails
...unction () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f6169996%2findex-on-multiple-columns-in-ruby-on-rails%23new-answer', 'question_page');
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Why remove unused using directives in C#?
...locating the required namespaces for these extension methods is a hassle. New developers might be accustomed to having System.Linq, included in their code files, and waste a lot of time trying to figure out why certain methods aren't available before asking for help.
– Mark At...
How can I run a program from a batch file without leaving the console open after the program starts?
...eter. When I would run it the way Patrick described, it would just open a new command prompt with "myProgram.exe" as the window title: start "VPN" "C:\Program Files (x86)\Cisco\Cisco AnyConnect Secure Mobility Client\vpnui.exe"
– Adam Plocher
May 1 '13 at 6:39...
Download file from an ASP.NET Web API method using AngularJS
... console.log("Trying saveBlob method ...");
var blob = new Blob([data], { type: contentType });
if(navigator.msSaveBlob)
navigator.msSaveBlob(blob, filename);
else {
// Try using other saveBlob implementations, if available
...
MSysGit vs. Git for Windows
...u wanted to use the latest version of git, so you can get all the exciting new features as soon as possible! I do this on linux.
– Cascabel
Sep 8 '10 at 23:46
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Lua简明教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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function newCounter()
local i = 0
return function() -- anonymous function
i = i + 1
return i
end
end
c1 = newCounter()
print(c1()) --> 1
print(c1()) --> 2
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event Action vs event EventHandler
...om the power of sameness) is that you can extend the EventArgs object with new properties without altering the signature of the event. This would still be possible if you used Action<SomeClassWithProperties>, but I don't really see the point with not using the regular approach in that case.
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How to avoid .pyc files?
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From "What’s New in Python 2.6 - Interpreter Changes":
Python can now be prevented from
writing .pyc or .pyo files by
supplying the -B switch to the Python
interpreter, or by setting the
PYTHONDONTWRITEBYTECODE environment
v...
What does “while True” mean in Python?
...eve you can do while(true == true) in most languages. This may help for a new programmer to better understand the logic behind it.
– Chris
Sep 20 '10 at 19:14
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