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When are C++ macros beneficial? [closed]
...ace I need to add it.
There are other useful examples too: many of which include the __FILE__ and __LINE__ preprocessor macros.
Anyway, macros are very useful when used correctly. Macros are not evil -- their misuse is evil.
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How to list the properties of a JavaScript object?
...urn result;
};
})();
Note that the currently accepted answer doesn't include a check for hasOwnProperty() and will return properties that are inherited through the prototype chain. It also doesn't account for the famous DontEnum bug in Internet Explorer where non-enumerable properties on the ...
Copy multiple files in Python
...n the source directory, os.path.isfile() to see if they are regular files (including symbolic links on *nix systems), and shutil.copy to do the copying.
The following code copies only the regular files from the source directory into the destination directory (I'm assuming you don't want any sub-dir...
How can a Java variable be different from itself?
...two NaNs returns false and any !=
comparison involving NaN returns true, including x!=x when x is NaN.
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SQL Server NOLOCK and joins
...nsaction yet. At this point your first query will return successfully and include the uncommitted rows; your second query won't return because table2 doesn't have the WITH(NOLOCK) hint on it.
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What's the difference between a file descriptor and file pointer?
...l level handler.
passe to read() and write() of UNIX System Calls.
Doesn't include buffering and such features.
Less portable and lacks efficiency.
File pointer:
File Pointer is a pointer to a C structure returned by fopen() library function, which is used to identifying a file, wrapping the file...
How to cherry-pick multiple commits
...Also, this will not cherry-pick A, but rather everything after A up to and including B.
– J. B. Rainsberger
Nov 25 '12 at 2:01
463
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Why can't the tag contain a tag inside it?
...9.3.1, which says that the P element "cannot contain block-level elements (including P itself)."
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How to filter files when using scp to copy dir recursively?
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I'd probably recommend using something like rsync for this due to its include and exclude flags, e.g:-
rsync -rav -e ssh --include '*/' --include='*.class' --exclude='*' \
server:/usr/some/unknown/number/of/sub/folders/ \
/usr/project/backup/some/unknown/number/of/sub/folders/
Some other us...
Namespace not recognized (even though it is there)
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I copied a .cs file with Explorer and then included it in the project. VS.Net set the build action as "Content" instead of "Compile" and so wasn't recognising the namespace. Good catch!
– AUSteve
Mar 10 '13 at 11:31
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