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Difference between Covariance & Contra-variance
... - the contravariance of Action<T> turns it round, if you see what I mean. It's an "output" in that the values can pass from the implementation of the method towards the caller's code, just like a return value can. Usually this sort of thing doesn't come up, fortunately :)
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Software Design vs. Software Architecture [closed]
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Architecture means the conceptual structure and logical organization of a computer or computer-based system.
Design means a plan or drawing produced to show the look and function or workings of a system or an object before it is made.
If...
Iterator invalidation rules
.... I have a question confusing me for days. What does "invalidated" exactly mean on these contexts? Does it mean "invalidated" can mean "no longer points to what it used to", not just "may not point to any valid element" as @Marshall Clow described in this answer ? Or it just indicates only 1 of the ...
How can I replace a newline (\n) using sed?
...ia N.
If we are before the last line, branch to the created label $!ba ($! means not to do it on the last line as there should be one final newline).
Finally the substitution replaces every newline with a space on the pattern space (which is the whole file).
Here is cross-platform compatible synta...
Android: How to change CheckBox size?
...he related drawables and set them in the checkbox:
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="new checkbox"
android:background="@drawable/my_checkbox_background"
android:button="@drawable/my_checkbox" />
The trick ...
What is the difference between a framework and a library?
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Actually these terms can mean a lot of different things depending the context they are used.
For example, on Mac OS X frameworks are just libraries, packed into a bundle. Within the bundle you will find an actual dynamic library (libWhatever.dylib)...
Optimise PostgreSQL for fast testing
... try to simulate production, including concurrency-heavy workloads. If you mean "single-connection, linear testing" then I'd agree with you.
– Craig Ringer
Jun 30 '15 at 11:38
1
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Controlling the screenshot in the iOS 7 multitasking switcher
...licationLaunch to prevent that snapshot image from being taken.
Having said that, it appears that the screen snapshot is still taken and I have therefore filed a bug report. But you should test further and see if using this setting helps.
If this was an enterprise app, you might also want to look...
AngularJS : automatically detect change in model
...ular will instead "shallow" watch the object for changes. For arrays this means comparing the array items, for object maps this means watching the properties. So this should do what you want:
$scope.$watch('myModel', function() { ... }, true);
Update: Angular v1.2 added a new method for this, `...
Can someone copyright a SQL query? [closed]
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Case 2: He sold you the .sql file as source code - he sold you the source meaning the source was what you bought from him and again you can modify it as you're just modifying what you bought.
People are getting too caught up in the fact that you can "view the source" of a .sql file - it's either a...