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How to get first record in each group using Linq

... So glad i found this. I got error message "The method 'First' can only be used as a final query operation. Consider using the method 'FirstOrDefault' in this instance instead." from your example. Only operation on the list i did after the query was pass...
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How to check for a valid Base64 encoded string

...ase 64 encoded other than just trying to convert it and see if there is an error? I have code code like this: 19 Answers ...
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How to change the color of an svg element?

....785c1.711,0.297,2.961,1.781,2.961,3.518v0.093c0,1.72-1.223,3.188-2.914,3.505 c-37.093,6.938-124.97,21.35-134.613,21.35c-13.808,0-25-11.192-25-25c0-9.832,14.79-104.675,21.618-143.081 c0.274-1.542,1.615-2.669,3.181-2.669h0.008c1.709,0,3.164,1.243,3.431,2.932l18.933,119.904L382.816,265.785z"/> ...
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Eclipse count lines of code

...ou need a view for real-time metrics violations, like compiler warnings or errors. You also need a reporting functionality to create reports for your boss. The plugin I described above is for reporting because you have to export the metrics when you want to see them. ...
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Extract subset of key-value pairs from Python dictionary object?

...rations are doing a different thing to the last two, and will result in an error if key doesn't exist in bigdict. – naught101 Jun 19 at 1:56 1 ...
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Add regression line equation and R^2 on graph

...arry! This is related to how R's parse() function works. Through trial and error I found that aes(label = paste(..eq.label.., ..rr.label.., sep = "*plain(\",\")~")) does the job. – Pedro Aphalo Apr 8 '17 at 10:09 ...
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How to log cron jobs?

... in /var/log/syslog, as already mentioned by @Matthew Lock. The logging of errors AFTER the program tried to execute, which can be sent to an email or to a file, as mentioned by @Spliffster. I prefer logging to a file, because with email THEN you have a NEW source of problems, and its checking if em...
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Import SQL dump into PostgreSQL database

...ve tried that psql mydatabase < C:\database\db-backup.sql but i get the error Invalid command \database. I also tried with " " around it. – dazz Jul 27 '11 at 10:05 ...
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How do I convert Long to byte[] and back in java

...ere. – user1132959 May 12 '13 at 19:05 4 If he's doing cross-language or cross-platform, then sen...
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How to download an entire directory and subdirectories using wget?

...r. – isomorphismes Jun 21 '14 at 17:05 2 I tried the above command to get all the files from http...