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printf format specifiers for uint32_t and size_t
...eded is that the format specifiers and the types agree, and you can always cast to make that true. long is at least 32bits, so %lu together with (unsigned long)k is always correct. size_t is trickier, which is why %zu was added in C99. If you can't use that, then treat it just like k (long is the bi...
A numeric string as array key in PHP
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Yes, it is possible by array-casting an stdClass object:
$data = new stdClass;
$data->{"12"} = 37;
$data = (array) $data;
var_dump( $data );
That gives you (up to PHP version 7.1):
array(1) {
["12"]=>
int(37)
}
(Update: My original answe...
Pointer arithmetic for void pointer in C
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cast it to a char pointer an increment your pointer forward x bytes ahead.
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Is it better to use Enumerable.Empty() as opposed to new List() to initialize an IEnumerable
...y. As for AsEnumerable, it's not really needed but it prevents Roles being cast to IList and modified.
– Lee
Dec 12 '09 at 18:07
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Returning IEnumerable vs. IQueryable
...mers = custs.Where(c => c.IsGold);
That code will execute SQL to only select gold customers. The following code, on the other hand, will execute the original query in the database, then filtering out the non-gold customers in the memory:
IEnumerable<Customer> custs = ...;
// Later on...
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Code Golf - π day
... area="{@area}"/>
</xsl:variable>
<xsl:apply-templates select="msxsl:node-set($next)"/>
</xsl:template>
<!-- End of the line?-->
<xsl:template match="s[@x &gt; @R]">
<xsl:variable name="next">
<!-- Go to next line.-->
&l...
Can someone explain this 'double negative' trick? [duplicate]
... find it highly intuitive to know what's "falsey" and what's "truthy" when cast to a Boolean.
– Chris
Jul 30 '13 at 3:15
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How to convert object array to string array in Java
... Good point. I understood the toString as just being a way of casting to a String, not the intention of actually replacing the objects with something else. If that is what you need to do, then looping is the only way.
– Yishai
Jun 19 '09 at 16:14
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Can I assume (bool)true == (int)1 for any C++ compiler?
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Yes. The casts are redundant. In your expression:
true == 1
Integral promotion applies and the bool value will be promoted to an int and this promotion must yield 1.
Reference: 4.7 [conv.integral] / 4: If the source type is bool....
How to get an object's properties in JavaScript / jQuery?
...ct. Even most of those primitives are actually also objects with a limited selection of methods. They are cast into objects under the hood, when required. To know the base class name, you may invoke the Object.prototype.toString method on an object, like this:
alert(Object.prototype.toString.call([...