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Swift variable decorations with “?” (question mark) and “!” (exclamation mark)
I understand that in Swift all variables must be set with a value, and that by using optionals we can set a variable to be set to nil initially.
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How to get the last element of a slice?
...eft it outside consciously. It was non-obvious and prone to errors. Go overall is circumspect about 'too much meaning'; it also doesn't feature method/operator overloading, default values for function params, etc. which IMHO goes in a similar philosophical vein. See this discussion and others: group...
How do you grep a file and get the next 5 lines
...e was a way to not limit the output to a certain amount of lines but print all lines after the matched one.
– Matthias Braun
May 19 '19 at 17:18
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matplotlib colorbar for scatter
...e a clear application when using matplotlib OOP interface: matplotlib.org/gallery/api/agg_oo_sgskip.html
– Ryszard Cetnarski
Sep 28 '18 at 14:45
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What are the parameters sent to .fail in jQuery?
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According to http://api.jquery.com/jQuery.ajax/ the fail callback should be getting:
jqXHR, textStatus, errorThrown
same as error, but error is deprecated:
Deprecation Notice: The jqXHR.success(), jqXHR.error(), and jqXHR.complete() callbacks will be deprecated in jQuery 1.8...
How are strings passed in .NET?
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A reference is passed; however, it's not technically passed by reference. This is a subtle, but very important distinction. Consider the following code:
void DoSomething(string strLocal)
{
strLocal = "local";
}
void Main()
{
string strMain = "main";
DoSomething...
Pull remote branch into local repo with different name?
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@Jared Technically a different question, but also easily possible (and actually thats one of the most common use-cases). It slightly depends on what you already did. In most cases it's just git checkout my_branch && git pull --reba...
Is it possible to set transparency in CSS3 box-shadow?
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I suppose rgba() would work here. After all, browser support for both box-shadow and rgba() is roughly the same.
/* 50% black box shadow */
box-shadow: 10px 10px 10px rgba(0, 0, 0, 0.5);
div {
width: 200px;
height: 50px;
line-height: 50px;
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Store select query's output in one array in postgres
...Sorry 'bout that. Mindless copying and pasting got array_agg() included in all three calls. I've also type-casted the initial one to make your PG version happy.
– Denis de Bernardy
Jun 19 '11 at 13:41
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Is there a “default” MIME type?
...lps convey to the recipient what to do with the data.
"unknown" doesn't really add anything over this, except to confuse clients who don't support random unofficial MIME types. Ditto for application/binary; it's just a non-standard way of restating "octet-stream".
This is the answer to "What can ...