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How to 'grep' a continuous stream?
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You don't need to do this for GNU grep (used on pretty much any Linux) as it will flush by default (YMMV for other Unix-likes such as SmartOS, AIX or QNX).
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How to delete large data of table in SQL without log?
...cate table will simply empty the table, you cannot use WHERE clause to limit the rows being deleted and no triggers will be fired.
On the other hand if you are deleting more than 80-90 Percent of the data, say if you have total of 11 Million rows and you want to delete 10 million another way would...
Volatile Vs Atomic [duplicate]
...ct of the volatile keyword is approximately that each individual read or write operation on that variable is atomic.
Notably, however, an operation that requires more than one read/write -- such as i++, which is equivalent to i = i + 1, which does one read and one write -- is not atomic, since anot...
Event on a disabled input
...lers could be placed on container elements. However, Firefox doesn't exhibit this behaviour, it just does nothing at all when you click on a disabled element.
I can't think of a better solution but, for complete cross browser compatibility, you could place an element in front of the disabled input...
How does `scp` differ from `rsync`?
...e tools is how they copy files.
scp basically reads the source file and writes it to the destination. It performs a plain linear copy, locally, or over a network.
rsync also copies files locally or over a network. But it employs a special delta transfer algorithm and a few optimizations to make th...
Convert integer into byte array (Java)
...yteBuffer.allocate(4);
//b.order(ByteOrder.BIG_ENDIAN); // optional, the initial order of a byte buffer is always BIG_ENDIAN.
b.putInt(0xAABBCCDD);
byte[] result = b.array();
Setting the byte order ensures that result[0] == 0xAA, result[1] == 0xBB, result[2] == 0xCC and result[3] == 0xDD.
Or alt...
List of macOS text editors and code editors [closed]
I searched for this and found Maudite's question about text editors but they were all for Windows.
39 Answers
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Is iterating ConcurrentHashMap values thread safe?
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What does it mean?
That means that each iterator you obtain from a ConcurrentHashMap is designed to be used by a single thread and should not be passed around. This includes the syntactic sugar that the for-each loop provides.
Wh...
How to pass parameters correctly?
...eginner but not a programming beginner.
I'm trying to learn C++(c++11) and it's kinda unclear for me the most important thing: passing parameters.
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Cannot drop database because it is currently in use
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Someone connected to the database. Try to switch to another database and then, to drop it:
Try
SP_WHO to see who connected
and KILL if needed
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