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Checking whether a variable is an integer or not [duplicate]
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Your sympy.Rational test doesn't quite do what you're thinking, because sympy.Rational(5) evaluates to an instance of sympy.Integer. Any operation that would produce a Rational with an integer value instead produces an Integer.
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Reload django object from database
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As of Django 1.8 refreshing objects is built in. Link to docs.
def test_update_result(self):
obj = MyModel.objects.create(val=1)
MyModel.objects.filter(pk=obj.pk).update(val=F('val') + 1)
# At this point obj.val is still 1, but the value in the database
# was updated to 2. Th...
Nested or Inner Class in PHP
...new \Package\MyParent\ProtectedChild();
}
public function test() {
echo "Call from parent -> ";
$this->publicChild->protectedMethod();
$this->protectedChild->protectedMethod();
echo "<br>Siblings<br>";
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Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)
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IMHO, the reason why 2 queries
SELECT * FROM count_test WHERE b = 666 ORDER BY c LIMIT 5;
SELECT count(*) FROM count_test WHERE b = 666;
are faster than using SQL_CALC_FOUND_ROWS
SELECT SQL_CALC_FOUND_ROWS * FROM count_test WHERE b = 555 ORDER BY c LIMIT 5;
has to be see...
How do you use gcc to generate assembly code in Intel syntax?
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Have you tried this?
gcc -S -masm=intel test.c
Untested, but I found it in this forum where someone claimed it worked for them.
I just tried this on the mac and it failed, so I looked in my man page:
-masm=dialect
Output asm instructions using selecte...
How to tell if a tag failed to load
... @Rudey Uncaught SyntaxError: Unexpected token '<' (in latest Chrome)
– daleyjem
Feb 29 at 5:25
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How does Facebook Sharer select Images and other metadata when sharing my URL?
...l url
~~> Will scrape the page provided in the url value
~~> You can test test the values here: https://developers.facebook.com/tools/debug
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What does Maven do, in theory and in practice? When is it worth to use it? [closed]
... to define the tasks you want to do. You don't need to write a "compile", "test", "package", or "clean" step like you would have to do in Ant or a Makefile. Just put the files in the places in which Maven expects them and it should work off of the bat.
Maven also has lots of nice plug-ins that you c...
What are the correct link options to use std::thread in GCC under linux?
Hi I am trying to use std::thread with G++. Here is my test code
5 Answers
5
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Should programmers use SSIS, and if so, why? [closed]
...nd maintaining functionality in a VS solution is so very much easier. Unit testing with VS is easy. All I need to do is to check in the source in Subversion, and verify how it loaded. Unit testing SSIS packages is very involved to put it mildly.
Besides, there were situations when SSIS was silently...