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Can table columns with a Foreign Key be NULL?
...record containing NULL foreign keys only applies to string types (varchar, etc), because otherwise an empty string can be passed as default. This is the case with MySQL, and results in an integrity error on update.
– CodeMantle
Mar 21 at 8:28
...
PHP exec() vs system() vs passthru()
...ge benefit. It will let you execute scripts/programs such as vim, dialog, etc, letting those programs handle control and returning to your script only when they are done.
If you use system() or exec() to execute those scripts/programs, it simply won't work.
Gotcha: For some reason, you can't exec...
How is an HTTP POST request made in node.js?
... Content-Length is bytes and not necessarily string length (UTF-16 etc). Using Buffer.byteLength(data) will always be correct.
– greenimpala
Jan 15 '14 at 10:55
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Is there any algorithm in c# to singularize - pluralize a word?
...it doesn't account for words like quizzes, parties, halves, mice, indices, etc. It's a good first stab, but there are a lot of other rules that should probably be processed first.
– Jeremy S
Jan 12 '10 at 19:23
...
Use of alloc init instead of new
...nitAllocNewTest new] is unaffected. (Apologies for lack of line breaks, etc.)
– Vince O'Sullivan
May 7 '14 at 12:02
...
How expensive is RTTI?
...
if (typeid(a) == typeid(b)) {
B* ba = static_cast<B*>(&a);
etc;
}
instead of
B* ba = dynamic_cast<B*>(&a);
if (ba) {
etc;
}
The former involves only one comparison of std::type_info; the latter necessarily involves traversing an inheritance tree plus comparisons.
P...
What's the “average” requests per second for a production web application?
...y make per second
c. the number of additional requests (i.e. ajax calls, etc)
As to what is considered fast.. do you mean how few requests a site can take? Or if a piece of hardware is considered fast if it can process xyz # of requests per second?
...
Converting from a string to boolean in Python?
...esn't look like a proper way to do it. I.e. using built-in functionality, etc.
30 Answers
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Is Using .NET 4.0 Tuples in my C# Code a Poor Design Decision?
...hat case, rather than having to remember the significance of Item1, Item2, etc.
Anonymous classes in C# already provide a superb solution to the most common private use of tuples, and they give meaningful names to the items, so they are actually superior in that sense. The only problem is that they...
How to use a variable inside a regular expression?
...(TEXTO) + r"\b(?!\w)"
if re.search(my_regex, subject, re.IGNORECASE):
etc.
Note the use of re.escape so that if your text has special characters, they won't be interpreted as such.
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