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Equation (expression) parser with precedence?
...sers.telenet.be/bartl/expressionParser/expressionParser.html.
// operator table
var ops = {
'+' : {op: '+', precedence: 10, assoc: 'L', exec: function(l,r) { return l+r; } },
'-' : {op: '-', precedence: 10, assoc: 'L', exec: function(l,r) { return l-r; } },
'*' : {op: '*', precedence: 2...
What is the fastest integer division supporting division by zero no matter what the result is?
...y accessible in C through using idiom. That is why it so hard to make a portable multiple precision integer library in C without resorting to (inline) assembly. My guess is that most decent compilers will understand the above idiom.
Another way of avoiding branches, as also remarked in some of the ...
What is the difference between a strongly typed language and a statically typed language?
...verything can be treated as a string.
– Little Bobby Tables
Apr 22 '10 at 12:14
Bobby, in a weakly typed language "5" ...
Are there good reasons not to use an ORM? [closed]
...o make a lot of difference to your TCO. For a first approximation, 98% portable is just as good as 100% portable, and far better than convoluted or poorly performing solutions to work around the limits of an ORM.
I have seen the former approach work well on a very large (100's of staff-years) J2EE...
MongoDB Many-to-Many Association
...y relationship)? Even the MongoDB docs hint that you should avoid having mutable, huge arrays of references. docs.mongodb.org/manual/tutorial/…
– CaptSaltyJack
Feb 1 '15 at 20:07
...
Why is require_once so bad to use?
... I doubt your defined() method is any faster than the built-in lookup table, but I agree with your overall point - surely a non-issue?!
– Bobby Jack
Oct 9 '08 at 8:42
1
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Is calculating an MD5 hash less CPU intensive than SHA family functions?
...argez maintenant" link). The report is in French, but it is mostly full of tables and numbers, and numbers are international. The implemented hash functions do not include the SHA-3 candidates (except SHABAL) but I am working on it.
...
Which is more preferable to use: lambda functions or nested functions ('def')?
...with def. The difference is due to def creating a name entry in the locals table. The resulting function has the same execution speed.
Readability:
Lambda functions are somewhat less readable for most Python users, but also much more concise in some circumstances. Consider converting from using ...
How exactly do Django content types work?
...t is a "compromise" of sorts to bypass some of the rigid fundamentals of a table oriented SQL system. Do not prematurely optimize your app! Django is best at getting out of your way so you can write the next generation application you have always wanted: use it's features to your advantage!
...
Different types of thread-safe Sets in Java
... like for HashMap/HashSet. There is a limited concurrency for writing (the table is partitioned, and write access will be synchronized on the needed partition), while read access is fully concurrent to itself and the writing threads (but might not yet see the results of the changes currently being w...