大约有 35,490 项符合查询结果（耗时：0.0473秒） [XML]
When should I use malloc in C and when don't I?
... string as read-only. You cannot make changes to it. Example:
some_memory[0] = 'h';
Is asking for trouble.
On the other hand
some_memory = (char *)malloc(size_to_allocate);
is allocating a char array ( a variable) and some_memory points to that allocated memory. Now this array is both read a...
SQL selecting rows by most recent date
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edited Oct 9 '08 at 21:55
Adam Pierce
29.9k2121 gold badges6666 silver badges8686 bronze badges
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What are the correct link options to use std::thread in GCC under linux?
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101
I think on Linux pthread is used to implement std::thread so you need to specify the -pthread c...
Java: Difference between the setPreferredSize() and setSize() methods in components
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edited Jul 18 at 18:30
Dave Jarvis
27.6k3535 gold badges157157 silver badges281281 bronze badges
an...
How to recursively find the latest modified file in a directory?
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edited Dec 30 '10 at 11:01
answered Dec 30 '10 at 10:52
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When to use symbols instead of strings in Ruby?
...r this:
require 'benchmark'
require 'haml'
str = Benchmark.measure do
10_000.times do
Haml::Engine.new('%input{type: "checkbox"}').render
end
end.total
sym = Benchmark.measure do
10_000.times do
Haml::Engine.new('%input{type: :checkbox}').render
end
end.total
puts "String: " + st...
How to sort an array of hashes in ruby
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answered Mar 30 '11 at 8:48
GarethGareth
109k3030 gold badges141141 silver badges151151 bronze badges
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How do I simply create a patch from my latest git commit?
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302
In general,
git format-patch -n HEAD^
(check help for the many options), although it's reall...
How can I set Image source with base64
...ById('img')
.setAttribute(
'src', 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=='
);
Real answer:
(And make sure you remove the line-breaks in the base64.)
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How do I declare an array of weak references in Swift?
...AnyObject> {
mutating func reap () {
self = self.filter { nil != $0.value }
}
}
The use of AnyObject above should be replaced with T - but I don't think the current Swift language allows an extension defined as such.
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