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Resolve build errors due to circular dependency amongst classes
...lation), you need to allocate space for object A. So, well, how much space then? Enough to store B! What's the size of B then? Enough to store A! Oops.
Clearly a circular reference that you must break.
You can break it by allowing the compiler to instead reserve as much space as it knows about upf...
xpath find if node exists
.... However, as Patrick's response implies, there is no xsl equivalent to if-then-else, so if you are looking for something more like an if-then-else, you're normally better off using xsl:choose and xsl:otherwise. So, Patrick's example syntax will work, but this is an alternative:
<xsl:choose>
...
Python Requests throwing SSLError
...
If you have a self-signed certificate, then download it and set verify to its filename. There is no excuse whatsoever for setting verify=False. verify='/path/to/cert.pem'
– Matthias Urlichs
Oct 9 '13 at 6:30
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Post-increment and pre-increment within a 'for' loop produce same output [duplicate]
...i++ needs to create a temporary variable to store the original value of i, then performs the incrementation and returns the temporary variable. The pre-incrementation ++i doesn't create a temporary variable. Sure, any decent optimization setting should be able to optimize this away when the object i...
Why is f(i = -1, i = -1) undefined behavior?
... this:
If A is not sequenced before B and B is not sequenced before A, then
two possibilities exist:
evaluations of A and B are unsequenced: they may be performed in any order and may overlap (within a single thread of execution, the
compiler may interleave the CPU instructions that...
PHPUnit: assert two arrays are equal, but order of elements not important
...d arguments. What this is actually doing is setting those three variables, then immediately passing their values to the function. This will cause problems if those three variables are already defined in the local scope since they will be overwritten.
– Yi Jiang
...
Difference between `set`, `setq`, and `setf` in Common Lisp?
...hich was eventually abbreviavated to SETQ (SET Quoted):
(setq *foo* 42)
Then lexical variables happened, and SETQ came to be used for assignment to them too -- so it was no longer a simple wrapper around SET.
Later, someone invented SETF (SET Field) as a generic way of assigning values to data s...
MySQL “Group By” and “Order By”
...
Then remove the ambuigity and prefix it with the table name, like cur.textID. Changed in the answer as well.
– Andomar
Jun 30 '09 at 23:10
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HTML-encoding lost when attribute read from input field
...n-memory element, set its inner text (which is automatically encoded)
// Then grab the encoded contents back out. The element never exists on the DOM.
return $('<textarea/>').text(value).html();
}
function htmlDecode(value){
return $('<textarea/>').html(value).text();
}
Basicall...
Is it possible to make the -init method private in Objective-C?
... enforce the singleton pattern. If you allow new instances to be created, then a developer who's not familiar with the API may use alloc and init and have their code function incorrectly because they have the right class, but the wrong instance. This is the essence of the principle of encapsulatio...