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How does deriving work in Haskell?

...c is clearly specified at haskell.org/onlinereport/haskell2010/haskellch11.html. – Wong Jia Hau Feb 9 '19 at 9:02 add a comment  |  ...
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Given final block not properly padded

...s described here: http://www.rsa.com/products/bsafe/documentation/cryptoj35html/doc/dev_guide/group_CJ_SYM__PAD.html (I assume you have the issue when you try to encrypt) You can choose your padding schema when you instantiate the Cipher object. Supported values depend on the security provider you...
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Explaining Python's '__enter__' and '__exit__'

...lp others here is the link: https://docs.python.org/2/reference/datamodel.html#with-statement-context-managers https://docs.python.org/3/reference/datamodel.html#with-statement-context-managers (detail is the same for both versions) object.__enter__(self) Enter the runtime context related to ...
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How to generate gcc debug symbol outside the build target?

...b) help symbol-file Ref: https://sourceware.org/gdb/onlinedocs/gdb/Files.html#Files https://sourceware.org/gdb/onlinedocs/gdb/Separate-Debug-Files.html share | improve this answer | ...
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How do I set cell value to Date and apply default Excel date format?

... http://poi.apache.org/spreadsheet/quick-guide.html#CreateDateCells CellStyle cellStyle = wb.createCellStyle(); CreationHelper createHelper = wb.getCreationHelper(); cellStyle.setDataFormat( createHelper.createDataFormat().getFormat("m/d/yy h:mm")); cell = row.create...
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How to UPSERT (MERGE, INSERT … ON DUPLICATE UPDATE) in PostgreSQL?

...te in PostgreSQL? http://petereisentraut.blogspot.com/2010/05/merge-syntax.html Upsert with a transaction Is SELECT or INSERT in a function prone to race conditions? SQL MERGE on the PostgreSQL wiki Most idiomatic way to implement UPSERT in Postgresql nowadays What about MERGE? SQL-standard MERGE a...
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MySQL, update multiple tables with one query

...an read more about joins here: http://dev.mysql.com/doc/refman/5.0/en/join.html. There's also a couple restrictions for ordering and limiting on multiple table updates you can read about here: http://dev.mysql.com/doc/refman/5.0/en/update.html (just ctrl+f "join"). ...
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Is there a way to pass optional parameters to a function?

...ython.org/2/reference/…, c) read docs.python.org/2/reference/expressions.html#calls . Sorry, running out of characters permitted in this comment. – Jim DeLaHunt Feb 6 '18 at 19:19 ...
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Failed to execute 'btoa' on 'Window': The string to be encoded contains characters outside of the La

...omponent didn't work for me. Replacing all the special characters with XML/HTML entities and then converting to the base64 representation was the only way to solve this issue for me. Some code: base64 = btoa(str.replace(/[\u00A0-\u2666]/g, function(c) { return '&#' + c.charCodeAt(0) + ';'; ...
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What arguments are passed into AsyncTask?

...urther refer : http://developer.android.com/reference/android/os/AsyncTask.html Or You Can clear whats the role of AsyncTask by refering Sankar-Ganesh's Blog Well The structure of a typical AsyncTask class goes like : private class MyTask extends AsyncTask<X, Y, Z> protected void onPre...