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When is a C++ destructor called?
...used part of its memory space.
Now, what happens when/if you erase an item from the vector? It can't just use delete -- that would release its entire block of memory; it needs to destroy one object in that memory without destroying any others, or releasing any of the block of memory it controls (for...
Import and Export Excel - What is the best library? [closed]
...- export becomes irrelevant with SpreadsheetML. The data is all accessible from within the file. If you need the data in a different format, provide a transform via an XSLT or via Linq.
– Todd Main
Apr 28 '10 at 6:23
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Creating a copy of an object in C# [duplicate]
Please have a look at the code below (excerpt from a C# book):
4 Answers
4
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What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
...you noted that it's an "unpacking operator", so that I could differentiate from passing by reference in C. +1
– bballdave025
Jun 8 '18 at 0:56
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Most efficient way to make the first character of a String lower case?
...y if and only if the string is in ASCII. This was the fastest. c[0] |= ' ' from Mike's comment gave the same performance.
char c[] = string.toCharArray();
c[0] += 32;
string = new String(c);
test4 used StringBuilder.
StringBuilder sb = new StringBuilder(string);
sb.setCharAt(0, Character.toLowerC...
How to modify list entries during for loop?
...i] = s.strip()
print(a) # -> ['a', 'b', 'c', 'd']
Which is different from:
a[:] = [s.strip() for s in a]
in that it doesn't require the creation of a temporary list and an assignment of it to replace the original, although it does require more indexing operations.
Caution: Although you can...
Type-juggling and (strict) greater/lesser-than comparisons in PHP
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PHP's comparison operators deviate from the computer-scientific definitions in several ways:
In order to constitute an equivalence relation == has to be reflexive, symmetric and transitive:
PHP's == operator is not reflexive, i.e. $a == $a is not always tru...
How to use jQuery in chrome extension?
.... But I am still getting the same error of not being able to access jquery from my work.js file. Uncaught ReferenceError: $ is not defined. If you can, can you please upload a working example somewhere. Just a simple example like doing '$("body").html("Foo!");' in work.js.
– I...
django MultiValueDictKeyError error, how do I deal with it
... is_private = request.POST['is_private']
else:
is_private = False
3
from django.utils.datastructures import MultiValueDictKeyError
try:
is_private = request.POST['is_private']
except MultiValueDictKeyError:
is_private = False
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Type Checking: typeof, GetType, or is?
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Ah, so if I have a Ford class that derives from Car and an instance of Ford, checking "is Car" on that instance will be true. Makes sense!
– jasonh
Jun 11 '09 at 19:19
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