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SQL Update with row_number()
...rver seems to update the row even if the value already exists and it takes time to do so, so adding the where clause makes it just skip over rows where the value hasn't changed. I have to say I was astonished as to how fast it could run my query.
Disclaimer: I'm no DB expert, and I'm using PARTITIO...
How can I get Git to follow symlinks?
...d to work when I tried it. That behavior was however unwanted by me at the time, so I can't give you information beyond that.
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What's the use of session.flush() in Hibernate
... first applied in-memory and synchronized with the database during
flush time. The flush operation takes every entity state change and
translates it to an INSERT, UPDATE or DELETE statement.
The flushing st
Is it fine to have foreign key as primary key?
...business and system.
If your userId is unique and will be unique all the time, you can use userId as your primary key. But if you ever want to expand your system, it will make things difficult. I advise you to add a foreign key in table user to make a relationship with table profile instead of add...
Jquery mouseenter() vs mouseover()
...arget element contains child elements:
http://jsfiddle.net/ZCWvJ/7/
Each time your mouse enters or leaves a child element, mouseover is triggered, but not mouseenter.
$('#my_div').bind("mouseover mouseenter", function(e) {
var el = $("#" + e.type);
var n = +el.text();
el.text(++n);
...
How can I find the number of arguments of a Python function?
...
Adding to the above, I've also seen that the most of the times help() function really helps
For eg, it gives all the details about the arguments it takes.
help(<method>)
gives the below
method(self, **kwargs) method of apiclient.discovery.Resource instance
Retrieves a r...
What new capabilities do user-defined literals add to C++?
...ng() << std::endl;
// This triggers the static_assert at compile time.
auto badbits = 2101010101010101010101010101010101010101010101010101010101010101_bits;
// This throws at run time.
std::bitset<64> badbits2("2101010101010101010101010101010101010101010101010101010101010101_...
Set keyboard caret position in html textbox
...en set the value equal to itself) doesn't work cross-browser, I spent some time tweaking and editing everything to get it working. Building upon @kd7's code here's what I've come up with.
Enjoy! Works in IE6+, Firefox, Chrome, Safari, Opera
Cross-browser caret positioning technique (example: movin...
UIButton inside a view that has a UITapGestureRecognizer
...ion compiles down to void so it doesn't leave any information behind at runtime to use for detection. But what you can do is walk up the view hierarchy, testing for UIControl, and returning NO if you find any controls.
– Lily Ballard
Aug 3 '11 at 17:38
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Android Fragment handle back button press [duplicate]
...
for me it calls 2 times...
– Android
Apr 22 '14 at 6:30
2
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