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Check if item is in an array / list
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Assuming you mean "list" where you say "array", you can do
if item in my_list:
# whatever
This works for any collection, not just for lists. For dictionaries, it checks whether the given key is present in the dictionary.
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How do CDI and EJB compare? interact?
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CDI: it is about dependency injection. It means that you can inject interface implementation anywhere. This object can be anything, it can be not related to EJB. Here is an example of how to inject random generator using CDI. There is nothing about EJB. You are going...
C# constructor execution order
...s complete (which is IMHO how things should be). Among other things, this means that derived-class fields can be initialized using fields or properties of the object under construction.
– supercat
Dec 12 '11 at 23:39
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How to select first and last TD in a row?
...t-child {color: red;}
Using the following pseudo classes:
:first-child means "select this element if it is the first child of its parent".
:last-child means "select this element if it is the last child of its parent".
Only element nodes (HTML tags) are affected, these pseudo-classes ignore t...
What's Pros and Cons: putting javascript in head and putting just before the body close
...elays the rendering of the page until after the scripts have loaded, which means the page may take longer to load - especially if you are downloading large script files.
If you move your script tags to the end of the page, you will ensure that the browser downloads images and stylesheets before the...
How Pony (ORM) does its tricks?
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The most complex part is the second step, where Pony must
understand the "meaning" of Python expressions. Seems you are most
interested in the first step, so let me explain how decompiling works.
Let's consider this query:
>>> from pony.orm.examples.estore import *
>>> select(c ...
Are “elseif” and “else if” completely synonymous?
...ould be identical to the one of 'elseif' (in a single word). The syntactic meaning is slightly different (if you're familiar with C, this is the same behavior) but the bottom line is that both would result in exactly the same behavior.
Essentially, they will behave the same, but else if is techni...
Nodejs send file in response
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By "stream" I mean "send the file data to the connection as it's being read" as opposed to "read the whole file in memory then send all that data to the connection at once" (which is the typical naive approach). I don't mean "stream the da...
How can I use an array of function pointers?
...ption>2)) { (*func_ptr[option])(); } Dude this means the method is called only when the user types in an invalid index!
– ljs
Oct 31 '08 at 7:24
6
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HTML/CSS: Make a div “invisible” to clicks?
... to put a (mostly) transparent <div> over some text. However, this means that the text can't be clicked (eg, to click links or select it). Would it be possible to simply make this div "invisible" to clicks and other mouse events?
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