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Scala: Abstract types vs generics
...part of the bound.
(i.e. Scala supports F-bounded polymorphism)
(Note, from Peter Canning, William Cook, Walter Hill, Walter Olthoff paper:
Bounded quantification was introduced by Cardelli and Wegner as a means of typing functions that operate uniformly over all subtypes of a given type.
They d...
How does “make” app know default target to build if no target is specified?
...
To save others a few seconds, and to save them from having to read the manual, here's the short answer. Add this to the top of your make file:
.DEFAULT_GOAL := mytarget
mytarget will now be the target that is run if "make" is executed and no target is specified.
If yo...
How to change a field name in JSON using Jackson
...ation.JsonProperty in Jackson 2.x. Check which ObjectMapper you are using (from which version), and make sure you use the proper annotation.
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How to get past the login page with Wget?
...te-after to the first retrieval so you don't end up saving the result page from logging in.
– Jim Hunziker
Jan 2 '13 at 15:41
2
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How to change a DIV padding without affecting the width/height ?
...g to the "outer"-width of the div, it means the padding will be subtracted from the width.
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redirect COPY of stdout to log file from within bash script itself
...piers, which keeps STDERR
# as a separate stream - I did not want to steal from him by simply
# adding his answer to mine.
exec 2>&1
echo "foo"
echo "bar" >&2
Note that this is bash, not sh. If you invoke the script with sh myscript.sh, you will get an error along the lines of synta...
Compelling examples of custom C++ allocators?
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@sellibitze: Since the vectors were being manipulated from within TBB tasks and reused across multiple parallel operations and there is no guarantee which TBB worker thread will pick up tasks, I conclude it works just fine. Although note that have been some historic issues with...
Opacity CSS not working in IE8
..., so if you want your page to validate, separate your standards stylesheet from your IE stylesheet by using an if IE statement like below:
<!--[if IE]>
<link rel="stylesheet" type="text/css" href="http://www.mysite.com/css/ie.css" />
<![endif]-->
If you separate the ie quirks, ...
OS X: equivalent of Linux's wget
How can I do an HTTP GET from a Un*x shell script on a stock OS X system? (installing third-party software is not an option, for this has to run on a lot of different systems which I don't have control on).
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What does the (unary) * operator do in this Ruby code?
...t has three objects
ArgumentError: wrong number of arguments (1 for 3)
from (irb):12:in 'func'
from (irb):12
>> func(*list) #But we CAN call func with an unpacked array.
1
2
3
=> nil
That's it!
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