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Null vs. False vs. 0 in PHP
...did some error occur while processing. The same actually goes for function params, you can process them differently depending on if they are arrays or strings or what not, and this technique is used throughout PHP heavily too, so everybody will get it quite easily. So I guess that's the power.
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ruby on rails f.select options with custom attributes
...>
Which you can then parse in your controller:
@id, @currency_code = params[:country_id].split(':')
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UIButton: set image for selected-highlighted state
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I found the solution: need to add addition line
[button setImage:[UIImage imageNamed:@"pressed.png"] forState:UIControlStateSelected | UIControlStateHighlighted];
s...
Java Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable
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Please, read: this stackoverflow.com/questions/20607777/…
– Felix Aballi
Feb 20 '19 at 17:36
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Example images for code and mark-up Q&As [closed]
...et icons
Animated
GIF is the only image format that supports animation. Here are a few examples.
Categories: gif animated-gif
Solid BG
Animated dashed border as seen in this answer.
Details: 100x30 px with filled BG (no transparency)
Zooming stars as seen in this answer, origina...
Why Doesn't C# Allow Static Methods to Implement an Interface?
...en types. This is often needed, when we use generics.
Suppose we have type parameter in generic method and we need to do some operation with it. We dont want to instantinate, because we are unaware of the constructors.
For example:
Repository GetRepository<T>()
{
//need to call T.IsQueryable...
Python script to copy text to clipboard [duplicate]
...'t persist after running from the script, refer to this issue for the solution.
– xtluo
Jun 10 '19 at 7:28
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Make an image width 100% of parent div, but not bigger than its own width
I’m trying to get an image (dynamically placed, with no restrictions on dimensions) to be as wide as its parent div, but only as long as that width isn’t wider than its own width at 100%. I’ve tried this, to no avail:
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Node / Express: EADDRINUSE, Address already in use - Kill server
... put that inside the exit event...
On crash, do process.on('uncaughtException', ..) and on kill do process.on('SIGTERM', ..)
That being said, SIGTERM (default kill signal) lets the app clean up, while SIGKILL (immediate termination) won't let the app do anything.
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Add a column to a table, if it does not already exist
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You can use a similar construct by using the sys.columns table io sys.objects.
IF NOT EXISTS (
SELECT *
FROM sys.columns
WHERE object_id = OBJECT_ID(N'[dbo].[Person]')
AND name = 'ColumnName'
)
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