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What is the difference between Strategy pattern and Dependency Injection?
...rn) is a particular software
design pattern, whereby algorithms can
be selected at runtime.
The strategy pattern is intended to
provide a means to define a family of
algorithms, encapsulate each one as an
object, and make them interchangeable.
The strategy pattern lets the
algorit...
Why should you use an ORM? [closed]
...f query I am thinking of is a polymorphic query. A simple ORM query might select all shapes in your database. You get a collection of shapes back. But each instance is a square, circle or rectangle according to its discriminator.
Another type of query would be one that eagerly fetches an object ...
Replace None with NaN in pandas dataframe
... dtype fields in your df and then replace the None:
obj_columns = list(df.select_dtypes(include=['object']).columns.values)
df[obj_columns] = df[obj_columns].replace([None], np.nan)
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How do disable paging by swiping with finger in ViewPager but still be able to swipe programmaticall
...Enabled(boolean enabled) {
this.enabled = enabled;
}
}
Then select this instead of the built-in viewpager in XML
<mypackage.CustomViewPager
android:id="@+id/myViewPager"
android:layout_height="match_parent"
android:layout_width="match_parent" />
You just need t...
How to Turn Off Showing Whitespace Characters in Visual Studio IDE
...and later versions
Ctrl + P to open and then writing Whitespace,
you can select the View: Toggle Render Whitespace
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PowerShell says “execution of scripts is disabled on this system.”
...ed cannot be the first line in your script. If it is, highlight it and run selected only INITIALLY before running the rest of your script.
– ozzy432836
Jun 21 '17 at 13:36
...
How do I toggle an ng-show in AngularJS based on a boolean?
... }
it will remain the submenu open after reloading the page according to selected menu item.
I have defined my pages like:
$routeProvider
.when('/dasboard/loan', {
controller: 'LoanController',
templateUrl: './views/loan/view.html',
controllerAs: 'vm'
...
How do I add a ToolTip to a control?
...
Add a ToolTip component to your form
Select one of the controls that you want a tool tip for
Open the property grid (F4), in the list you will find a property called "ToolTip on toolTip1" (or something similar). Set the desired tooltip text on that property.
Rep...
What Are Some Good .NET Profilers?
...ren in addition to size of the object itself (but only when an instance is selected unfortunately, not in the overall class list).
Better integration to Visual Studio (right-click on graph to jump to file)
Scitech .NET Memory Profiler
Shows stack trace when object was allocated. This is really u...
How to calculate md5 hash of a file using javascript
...the FileAPI, you *can * read the contents of a file - the user has to have selected it, either with an <input> element or drag-and-drop. As of Jan 2013, here's how the major browsers stack up:
FF 3.6 supports FileReader, FF4 supports even more file based functionality
Chrome has supported th...