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How to open files relative to home directory
The following fails with Errno::ENOENT: No such file or directory , even if the file exists:
4 Answers
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Is it better to call ToList() or ToArray() in LINQ queries?
... make it into Gen 2 then you may be better off paying the extra allocation now vs polluting the Gen 2 heap. IME though I rarely see this. It's much more common to see ToArray being passed immediately to another short lived LINQ query.
– JaredPar
May 1 '13 at 1...
ListCtrl 重绘（Custom Draw） - C/C++ - 清泛网 - 专注C/C++及内核技术
...的处理过程，Windows在绘制List Ctrl的某个时间点上通过 Notification 消息通知你的程序，你可以选择忽略所有的通知（这样你就会看到标准的ListCtrl），或者处理某部分的绘制（实现简单的效果），甚至整个的控件都由你来绘制（就...
PostgreSQL: insert from another table
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Very late answer, but I think my answer is more straight forward for specific use cases where users want to simply insert (copy) data from table A into table B:
INSERT INTO table_b (col1, col2, col3, col4, col5, col6)
SELECT col1, 'str_val', int_val, col4, col5, col6
FROM table_a
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Understanding NSRunLoop
...y, though there are some (networking) components that may allow you to specify which run loop they will use for I/O processing.
A run loop for a given thread will wait until one or more of its input sources has some data or event, then fire the appropriate input handler(s) to process each input sou...
Gesture recognizer and button actions
...n the right direction. Although this solves my problem, but i still don't know why the responder hierarchy is not working in this case. It probably should, but it's not being handled by Apple.
– Mustafa
Jan 28 '11 at 7:29
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Copy data into another table
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If both tables are truly the same schema:
INSERT INTO newTable
SELECT * FROM oldTable
Otherwise, you'll have to specify the column names (the column list for newTable is optional if you are specifying a value for all colum...
What version of javac built my jar?
... file, and it could have been built in any one of three JDKs. We need to know exactly which one, so we can certify compatibility. Is the compiler version embedded somewhere in the class files or jar?
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What are the most interesting equivalences arising from the Curry-Howard Isomorphism?
...ally writing such a function is difficult. I see in your profile that you know Haskell, so maybe you're thinking in algebraic data types and pattern matching? Consider that an uninhabited type must have no constructors and, thus, nothing to pattern match against. You'd have to write a "function" wit...
What is a stack trace, and how can I use it to debug my application errors?
...essionImpl.java:689)
at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.hibernate.context.ThreadLocalSessionContext$Transact...