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asynchronous vs non-blocking
...ing socket would have blocked. You have to use a separate function such as select or poll to find out when is a good time to retry.
But asynchronous sockets (as supported by Windows sockets), or the asynchronous IO pattern used in .NET, are more convenient. You call a method to start an operation, ...
What is the difference between customErrors and httpErrors?
... the Debugging Properties 2.) under "Error Pages / Edit Feature Settings", select "Detailed errors". 3.) disable "Show friendly HTTP error messages" in IE stackoverflow.com/questions/2640526/…
– Kiquenet
Oct 6 '15 at 19:38
...
Entity Framework and Connection Pooling
...ies and store them at once. This is called Unit of Work pattern. You can't selectively say which modified attached entity you want to save.
Combine these two patterns and you will see some interesting effects. You have only one instance of entity for the whole application. Any changes to the entity...
How can I handle time zones in my webapp?
...ssume that timezone.
Should the device switch timezones, add a dropdown to select which timezone the event is in, defaulting to the device's own timezone.
Add an option to show/hide this timezone dropdown manually.
Always store timestamps in UTC.
...
How to remove convexity defects in a Sudoku square?
...ask out) the background. For that, I use connected component analysis, and select the component that's got the largest convex area:
components =
ComponentMeasurements[
ColorNegate@Binarize[srcAdjusted], {"ConvexArea", "Mask"}][[All,
2]];
largestComponent = Image[SortBy[components, First...
How can I use Autolayout to set constraints on my UIScrollview?
...ication.
Storyboard
In this example we will make a horizontal scroll view. Select the View Controller and then choose Freeform in the Size Inspector. Make the width 1,000 and the height 300. This just gives us room on the storyboard to add content that will scroll.
Add a Scroll View
Add a UIScrollV...
Why are joins bad when considering scalability?
...en so can you.
There are many reasons not to denomalize. First, speed of select queries is not the only or even main concern with databases. Integrity of the data is the first concern. If you denormalize then you have to put into place techniques to keep the data denormalized as the parent data ch...
What is the significance of 1/1/1753 in SQL Server?
...imply use the Gregorian Calendar.
So with the greater range of datetime2
SELECT CONVERT(VARCHAR, DATEADD(DAY,-5,CAST('1752-09-13' AS DATETIME2)),100)
Returns
Sep 8 1752 12:00AM
One final point with the datetime2 data type is that it uses the proleptic Gregorian calendar projected backwards t...
How to upload a file in Django? [closed]
...ss DocumentForm(forms.Form):
docfile = forms.FileField(
label='Select a file',
help_text='max. 42 megabytes'
)
4. View: myproject/myapp/views.py
A view where all the magic happens. Pay attention how request.FILES are handled. For me, it was really hard to spot the fact tha...
How do I create a WPF Rounded Corner container?
...n. The extensions are VisiFire charting objects. The user pushes a button, selected from the list of buttons, to execute the desired chart.
' Create a ListBox of Buttons, one button for each MEF charting component.
For Each c As Lazy(Of ICharts, IDictionary(Of String, Object)) In ext.C...