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Checking if a double (or float) is NaN in C++
...ntation for your compiler, of course...
– dmckee --- m>ex m>-moderator kitten
Feb 20 '09 at 19:21
39
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size_t vs. uintptr_t
...e C standard guarantees that size_t is a type that can hold any array indm>ex m>. This means that, logically, size_t should be able to hold any pointer type. I've read on some sites that I found on the Googles that this is legal and/or should always work:
...
Why use the params keyword?
...
The sum with a delegate, though, does increase the complm>ex m>ity of the compiled code, which could potentially be less performant. Not really relevant in this particular situation, as it would not result in any closures, but it's worth knowing what the compiler's actually doing to m...
What is the most efficient/elegant way to parse a flat table into a tree?
...Closure Table in my presentation Models for Hierarchical Data with SQL and m>PHP m> and in my book SQL Antipatterns: Avoiding the Pitfalls of Database Programming.
CREATE TABLE ClosureTable (
ancestor_id INT NOT NULL REFERENCES FlatTable(id),
descendant_id INT NOT NULL REFERENCES FlatTable(id),
...
pyplot scatter plot marker size
... it increases it by a factor of 4). To see this consider the following two m>ex m>amples and the output they produce.
# doubling the width of markers
x = [0,2,4,6,8,10]
y = [0]*len(x)
s = [20*4**n for n in range(len(x))]
plt.scatter(x,y,s=s)
plt.show()
gives
Notice how the size increases very quick...
Are Stored Procedures more efficient, in general, than inline statements on modern RDBMS's? [duplica
...nd off since for almost a decade (along with application development in C, m>PHP m>, PL/SQL, C#.NET, and Ruby). So, I have no particular axe to grind in this (sometimes) holy war.
The historical performance benefit of stored procs have generally been from the following (in no particular order):
Pre-p...
ANTLR: Is there a simple m>ex m>ample?
...hortcomings. This is just an m>ex m>ample you can work on yourself.
Here's the contents of the grammar file m>Ex m>p.g:
grammar m>Ex m>p;
/* This will be the entry point of our parser. */
eval
: additionm>Ex m>p
;
/* Addition and subtraction have the lowest precedence. */
additionm>Ex m>p
: multiplym>Ex m>p...
What platforms have something other than 8-bit char?
...
char is also 16 bit on the Tm>ex m>as Instruments C54x DSPs, which turned up for m>ex m>ample in OMAP2. There are other DSPs out there with 16 and 32 bit char. I think I even heard about a 24-bit DSP, but I can't remember what, so maybe I imagined it.
Another co...
Which one will m>ex m>ecute faster, if (flag==0) or if (0==flag)?
... does warn in case of the former (flag = 0), there are no such warnings in m>PHP m>, Perl or Javascript or <insert language here>.
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What's the difference between dependencies, devDependencies and peerDependencies in npm package.json
... documentation answers my question very poorly. I didn't understand those m>ex m>planations. Can someone say in simpler words? Maybe with m>ex m>amples if it's hard to choose simple words?
...