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Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?
There is a case where a map will be constructed, and once it is initialized, it will never be modified again. It will however, be accessed (via get(key) only) from multiple threads. Is it safe to use a java.util.HashMap in this way?
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Creating an index on a table variable
Can you create an index on a table variable in SQL Server 2000?
3 Answers
3
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Execute combine multiple Linux commands in one line
...colons not always works. E.g. ls >/dev/null & ; echo $! triggers an error.
– Hi-Angel
Nov 6 '14 at 8:52
1
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How do I convert an integer to binary in JavaScript?
...ring(2) because the parser sees the dot as decimal separator and throws an error because of a missing dot operator.
– kapex
Dec 12 '18 at 8:47
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How to pass json POST data to Web API method as an object?
...s: function (data, status, xhr) {
alert('Success!');
},
error: function (xhr, status, error) {
alert('Update Error occurred - ' + error);
}
});
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improv...
How dangerous is it to access an array out of bounds?
...hings happen on computers I've used (corrupted files, unrecoverable system errors, etc.), and I have no idea how many of them might have been caused by some C program exhibiting the dreaded undefined behavior. (So far no actual demons have flown out of my nose.)
– Keith Thompso...
Strip HTML from Text JavaScript
...h HTML from an untrusted source. To see why, try running strip("<img onerror='alert(\"could run arbitrary JS here\")' src=bogus>")
– Mike Samuel
Sep 22 '11 at 18:06
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PermGen elimination in JDK 8
...ze JVM arguments are ignored and you will never get a java.lang.OutOfMemoryError: PermGen error.
Advantages of MetaSpace
Take advantage of Java Language Specification property : Classes and associated metadata lifetimes match class loader’s
Per loader storage area – Metaspace
Linear allocation ...
Saving grid.arrange() plot to file
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When I try this I get an error telling me that g is not of the right type?
– Jack Aidley
Jun 16 '14 at 12:20
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self referential struct definition?
...ive things... I would like each cell to contain another cell, but I get an error along the lines of "field 'child' has incomplete type". What's up?
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