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Why does i = i + i give me 0?
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230 + 230 = -231
-231 + -231 = 0
...in int arithmetic, since it's essentially arithmetic mod 2^32.
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unsigned int vs. size_t
... static array of 8Gb).
The size_t type may be bigger than, equal to, or smaller than an unsigned int, and your compiler might make assumptions about it for optimization.
You may find more precise information in the C99 standard, section 7.17, a draft of which is available on the Internet in pdf fo...
How can I get the SQL of a PreparedStatement?
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Although this is functionally true, there's nothing preventing utility code from reconstructing an equivalent unprepared statement. For example, in log4jdbc: "In the logged output, for prepared statements, the bind arguments are automatically insert...
How can I make a Python script standalone executable to run without ANY dependency?
...'m building a Python application and don't want to force my clients to install Python and modules.
19 Answers
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Django: Set foreign key using integer?
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Yep:
employee = Employee(first_name="Name", last_name="Name")
employee.type_id = 4
employee.save()
ForeignKey fields store their value in an attribute with _id at the end, which you can access directly to avoid visiting the database.
The _id version of...
How to get scrollbar position with Javascript?
...roll position isn't set on document.body in most modern browsers - it's usually set on document.documentElement now. See bugs.chromium.org/p/chromium/issues/detail?id=157855 for Chrome's transition.
– fzzfzzfzz
May 3 '18 at 15:51
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How to run SQL script in MySQL?
...ing '/' instead of '\' worked correctly for me. I got errors when I originally used '/'. This is what worked for me...source C:/Users/macombers/Downloads/midcoast_db.sql;
– Zack Macomber
Oct 3 '14 at 15:09
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QuotaExceededError: Dom exception 22: An attempt was made to add something to storage that exceeded
...ode browsing. While in private browsing, local storage is not available at all.
One solution is to warn the user that the app needs non-private mode to work.
UPDATE: This has been fixed in Safari 11, so the behaviour is now aligned with other browsers.
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jQuery checkbox change and click event
... edited Aug 21 '19 at 8:32
callmebob
4,51355 gold badges2323 silver badges3737 bronze badges
answered Aug 11 '11 at 19:05
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argparse module How to add option without any argument?
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As @Felix Kling suggested use action='store_true':
>>> from argparse import ArgumentParser
>>> p = ArgumentParser()
>>> _ = p.add_argument('-f', '--foo', action='store_true')
>>> args = p.parse_args()
>>> args.foo
False
&g...