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How exactly does __attribute__((constructor)) work?
.../runtime-linker when code is loaded/unloaded. I.e. on each ELF load (for example a shared library) code in .init will be run. It's still possible to use that mechanism to achieve about the same thing as with __attribute__((constructor))/((destructor)). It's old-school but it has some benefits.
....
How do I fix “for loop initial declaration used outside C99 mode” GCC error?
...
gcc -std=c99 foo.c -o foo
REF: http://cplusplus.syntaxerrors.info/index.php?title='for'_loop_initial_declaration_used_outside_C99_mode
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C programming in Visual Studio
... can write C:
https://msdn.microsoft.com/en-us/library/bb384838.aspx?f=255&MSPPError=-2147217396
From the link above:
By default, the Visual C++ compiler treats all files that end in .c as C source code, and all files that end in .cpp as C++ source code. To force the compiler to treat all f...
How do you rename a Git tag?
...s your remote location,
# the one you can see with `git remote`. In this example: `origin`
git push origin :refs/tags/old
Finally you need to add your new tag to the remote location. Until you have done this, the new tag(s) will not be added:
git push origin --tags
Iterate this for every remote...
Handle Guzzle exception and get HTTP body
...ttp\Psr7\Response
* (find it in ./vendor/guzzlehttp/psr7/src/Response.php) with all
* its own and its 'Message' trait's methods. See more explanations below.
*
* So you can have: HTTP status code, message, headers and body.
* Just check the exception object has the response ...
How to run a PowerShell script from a batch file
...are looking for:
PowerShell -NoProfile -ExecutionPolicy Bypass -Command "& 'C:\Users\SE\Desktop\ps.ps1'"
And if you need to run your PowerShell script as an admin, use this:
PowerShell -NoProfile -ExecutionPolicy Bypass -Command "& {Start-Process PowerShell -ArgumentList '-NoProfile -Exe...
What is attr_accessor in Ruby?
...on = Person.new
person.name # => no method error
Obviously we never defined method name. Let's do that.
class Person
def name
@name # simply returning an instance variable @name
end
end
person = Person.new
person.name # => nil
person.name = "Dennis" # => no method error
Aha, w...
$http get parameters does not work
... is a config object. You want something like this:
$http
.get('accept.php', {
params: {
source: link,
category_id: category
}
})
.success(function (data,status) {
$scope.info_show = data
});
See the Arguments section of http://d...
How to pass parameters correctly?
...o the caller, then you should pass by lvalue reference:
void foo(my_class& obj)
{
// Modify obj here...
}
If your function does not need to modify the original object, and does not need to create a copy of it (in other words, it only needs to observe its state), then you should pass by lv...
Convert json data to a html table [closed]
...+) {
for (var key in arr[i]) {
if (arr[i].hasOwnProperty(key) && columnSet.indexOf(key) === -1) {
columnSet.push(key);
var th = _th_.cloneNode(false);
th.appendChild(document.createTextNode(key));
tr.appendChild(th);
}
}
}
tab...