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Generating a list of which files changed between hg versions
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Python Infinity - Any caveats?
... not get an inf value through usual arithmetic calculations:
>>> 2.0**2
4.0
>>> _**2
16.0
>>> _**2
256.0
>>> _**2
65536.0
>>> _**2
4294967296.0
>>> _**2
1.8446744073709552e+19
>>> _**2
3.4028236692093846e+38
>>> _**2
1.15792089...
How can I count the number of matches for a regex?
...tches
When counting matches of aa in aaaa the above snippet will give you 2.
aaaa
aa
aa
To get 3 matches, i.e. this behavior:
aaaa
aa
aa
aa
You have to search for a match at index <start of last match> + 1 as follows:
String hello = "aaaa";
Pattern pattern = Pattern.compile("aa");...
bool operator ++ and --
... the integral value is anything else - notably this includes 0 [false] and 2 or more [true]).
So as a short-hand ++ worked, and -- didn't.
++ is allowed on bools for compatibility with this, but its use is deprecated in the standard and it was removed in C++17.
This assumes that I only use x as an ...
How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
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C/C++ macro string concatenation
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If they're both strings you can just do:
#define STR3 STR1 STR2
The preprocessor automatically concatenates adjacent strings.
EDIT:
As noted below, it's not the preprocessor but the compiler that does the concatenation.
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Is it possible to for SQL Output clause to return a column not being inserted?
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How can I open Windows Explorer to a certain directory from within a WPF app?
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answered Nov 17 '09 at 2:01
Jamie PenneyJamie Penney
8,38833 gold badges2626 silver badges3737 bronze badges
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“x not in y” or “not x in y”
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They always give the same result.
In fact, not 'ham' in 'spam and eggs' appears to be special c...
SQL update trigger only when column is modified
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You have two way for your question :
1- Use Update Command in your Trigger.
ALTER TRIGGER [db...