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# 浅析 - CocoaLumberjack 3.6 之 DDLog - Aha Edmond
介绍 CocoaLumberjack is a fast & simple, yet powerful & flexible logging framework for Mac and iOS. 先扯一下 lumberjack 这个单词，对应的就是它的 logo，一位伐木工。 一直不太理解为什么是用这…
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Doing the following: results in an error: "Use of undeclared identifier LOG_LEVEL_DEF"
LogglyLogger *logglyLogger = [[LogglyLogger alloc] init];
[logglyLogger setLogFormatter:[[LogglyFormat…
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Hi @frankmcsherry,
You mentioned several times in the past that `threshold` and `threshold_total` operators internally construct arrangements that can in principle be extracted and reused just like…
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Learned from @netj that MB Search works only with Postgresql 9.3 (and not PGXL or Greenplum) because it uses the `to_json` function.
How hard is it to drop the requirement for `to_json`? Or at least …
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Rust IM language is quite slow on recompiles, which is frustrating. Maybe it's possible to build template in an interpreted language (say, Python)?
This would be fine for newcomers/tutorial/CLI cas…
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DBSP should be to handle incremental joins that do not use just field equality efficiently - they are still bilinear operators.
The current API based on indexes does not allow expressing non-equi joi…
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We should think of publishing Java API as a managed jar for better integration with maven or gradle based projects.
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```
A bug was introduced in the stratification algorithm of bddbddb in revision
558:
http://bddbddb.svn.sourceforge.net/viewvc/bddbddb?view=rev&revision=558
The current workaround is to use bddbddb…
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I am adding an option to ddlog CLI to start `ddshow` before initializing the dataflow graph. This should greatly simplify the profiling workflow as the user only needs to type one command and doesn't…
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```
A bug was introduced in the stratification algorithm of bddbddb in revision
558:
http://bddbddb.svn.sourceforge.net/viewvc/bddbddb?view=rev&revision=558
The current workaround is to use bddbddb…