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Python group by

...tions import defaultdict >>> res = defaultdict(list) >>> for v, k in input: res[k].append(v) ... Then, convert that dictionary into the expected format. >>> [{'type':k, 'items':v} for k,v in res.items()] [{'items': ['9085267', '11788544'], 'type': 'NOT'}, {'items': ['52...
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What does the “@” symbol do in Powershell?

...rray: "server1","server2" So the @ is optional in those cases. However, for associative arrays, the @ is required: @{"Key"="Value";"Key2"="Value2"} Officially, @ is the "array operator." You can read more about it in the documentation that installed along with PowerShell, or in a book like "Wi...
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Can functions be passed as parameters?

... If I understand your question correctly, I think you're looking for a func that returns a func, see here where I replace a hardcoded "quote123" function with a "quote" function that achieves the same result after you pass it some input: play.golang.org/p/52ahWAI2xsG –...
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iTerm2 keyboard shortcut - split pane navigation

... I have changed my config a lot, but I had to set these keys up before they worked. – DigitalDesignDj Oct 7 '15 at 20:37 3 ...
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What is the best way to count “find” results?

... not more reliable if the -printf flag to find isn't supported on your platform. ;-) – Randy Howard Mar 27 '13 at 16:28 7 ...
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How to add global ASP.Net Web Api Filters?

... The following code, in my Global.asax, works for me: public static void RegisterWebApiFilters(System.Web.Http.Filters.HttpFilterCollection filters) { filters.Add(new MyWebApiFilter()); } protected void Application_Start() { RegisterWebApiFilters(GlobalConfiguratio...
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See “real” commit date in github (hour/day)

...ithub, with day/hour precision? Older commits appear in a "human readable" format, such as "2 years ago" instead of showing the actual date. ...
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What does the fpermissive flag do?

...om the docs: -fpermissive Downgrade some diagnostics about nonconformant code from errors to warnings. Thus, using -fpermissive will allow some nonconforming code to compile. Bottom line: don't use it unless you know what you are doing! ...
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How to include file in a bash shell script

...e correct, but if run script in other folder, there will be some problem. For example, the a.sh and b.sh are in same folder, a include b with . ./b.sh to include. When run script out of the folder, for example with xx/xx/xx/a.sh, file b.sh will not found: ./b.sh: No such file or directory. I u...
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How to get the contents of a webpage in a shell variable?

... -q quiet option to turn off's wget output. You can use the curl command for this aswell as: content=$(curl -L google.com) echo $content We need to use the -L option as the page we are requesting might have moved. In which case we need to get the page from the new location. The -L or --location...