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Are there any smart cases of runtime code modification?
...as a time (long ago, I know), when computers had no instructions to return from a subroutine or to indirectly address memory. Self modifying code was the only way to implement subroutines, pointers and arrays.
More cases of code modification:
Many debuggers replace instructions to implement brea...
How do I import the Django DoesNotExist exception?
... - before it is passed to assertRaises. You need to separate the arguments from the callable, as described in the unittest documentation:
self.assertRaises(Answer.DoesNotExist, Answer.objects.get, body__exact='<p>User can reply to discussion.</p>')
or better:
with self.assertRaises(A...
Why not use exceptions as regular flow of control?
...
Example : when I debug a .net program, I launch it from visual studio and I ask VS to break on all exceptions. If you rely on exceptions as an expected behaviour, I can't do that anymore (since it would break 5times/sec), and it's far more complicated to locate the problemati...
Boolean operators && and ||
...o see if all or any of the comparisons are true, respectively. The results from these functions are sure to be length 1 so they are appropriate for use in if clauses, while the results from the vectorized comparison are not. (Though those results would be appropriate for use in ifelse.
One final d...
What's the difference between and , and ?
...s an old browser to navigate the web, he or she has many problems already, from a visual and security point of view. Because of that, I believe that programmers and designers should not support old browsers anymore.
– yeyo
Nov 25 '14 at 16:26
...
Java8 Lambdas vs Anonymous classes
...xpressions is that AICs introduce a new scope. That is, names are resolved from the AIC's superclasses and interfaces and can shadow names that occur in the lexically enclosing environment. For lambdas, all names are resolved lexically.
...
Bamboo Vs. Hudson(a.k.a. Jenkins) vs Any other CI systems [closed]
... hosting. I'll either run it on a local server or on an Amazon instance.
From experience, it is generally cheaper to host your own CI server. But if you need to scale, Bamboo makes it easy to distribute your builds to additional local agents or scale out to Amazon via Elastic agents.
Also, thi...
Why would you ever implement finalize()?
...
skaffman - I don't believe that (aside from some buggy JVM implementation). From the Object.finalize() javadoc: If an uncaught exception is thrown by the finalize method, the exception is ignored and finalization of that object terminates.
–...
How do I forward parameters to other command in bash script?
... only 2 : ${@:2:1}"
echo "params 2 and 3 : ${@:2:2}"
echo "params all from 2: ${@:2:99}"
echo "params all from 2: ${@:2}"
run it:
$ chmod u+x r.sh
$ ./r.sh 1 2 3 4 5 6 7 8 9 10
the result is:
params only 2 : 2
params 2 and 3 : 2 3
params all from 2: 2 3 4 5 6 7 8 9 10
params all from 2...
Merge 2 arrays of objects
...o keep up to date.
The source (arr2) array is where the new data is coming from, and we want it merged into our target array.
We loop over the source array looking for new data, and for every object that is not yet found in our target array we simply add that object using target.push(sourceElement)
...