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Type of conditional expression cannot be determined because there is no implicit conversion between
...of the expression is int?.
1: Note further that the type of the left-hand side is ignored in determining the type of the conditional expression, a common source of confusion here.
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Infinite scrolling with React JS
...
Basically when scrolling you want to decide which elements are visible and then rerender to display only those elements, with a single spacer element on top and bottom to represent the offscreen elements.
Vjeux made a fiddle here which you can look at: jsfiddle.
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MySQL: Transactions vs Locking Tables
...n. Given (as everyone knows these days) that banks are extraordinarily stupid, let's say their system works like this:
$balance = "GET BALANCE FROM your ACCOUNT";
if ($balance < $amount_being_paid) {
charge_huge_overdraft_fees();
}
$balance = $balance - $amount_being paid;
UPDATE your ACCOUN...
Is there a performance difference between CTE , Sub-Query, Temporary Table or Table Variable?
...elling the SQL engine how to do the work.
As a general rule, it is a good idea to let the SQL engine and SQL optimizer find the best query plan. There are many person-years of effort that go into developing a SQL engine, so let the engineers do what they know how to do.
Of course, there are situa...
Maintain git repo inside another git repo
... that right, can I independently check out a submodule-d repo entirely outside of the one I find it in? How would I take an already existing repo and reference it as a submodule in another project?
– JohnO
Jan 11 '11 at 19:08
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getResourceAsStream() vs FileInputStream
...Stream . However, using the same path, I was able to load the file when I did getResourceAsStream() .
What is the difference between the two methods, and why does one work while the other doesn't?
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How to require a controller in an angularjs directive
...rk. require is a way of communicating between components.
Check out the Guide page of directives for more info: http://docs.angularjs.org/guide/directive
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Does every Javascript function have to return a value?
...urning something. This is also why, instead of "finished", a function is said to "have returned".
A function that lacks an explicit return statement will return undefined, like a C(++) function that has no return value is said (and its signature reflects this) to return void:
void noReturn()//retur...
When would you use .git/info/exclude instead of .gitignore to exclude files?
.... Another advantage is that you can have multiple .gitignore files, one inside each directory/subdirectory for directory specific ignore rules, unlike .git/info/exclude.
So, .gitignore is available across all clones of the repository. Therefore, in large teams all people are ignoring the same kind ...
setuptools: package data folder location
...on 1: Install as package data
The main advantage of placing data files inside the root of your Python package
is that it lets you avoid worrying about where the files will live on a user's
system, which may be Windows, Mac, Linux, some mobile platform, or inside an Egg. You can
always find the dire...