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How to toggle a boolean?
...DynamicEditMode ^= true; // Value is: 0 (number)
This is easier for me to scan than repeating the variable in each line.
This method works in all (major) browsers (and most programming languages).
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Is there a DesignMode property in WPF?
In Winforms you can say
5 Answers
5
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Detect if an input has text in it using CSS — on a page I am visiting and do not control?
... cannot do this because CSS cannot do this. CSS has no (pseudo) selectors for <input> value(s). See:
The W3C selector spec
The Mozilla/Firefox supported selectors
Cross-browser, CSS3 support table
The :empty selector refers only to child nodes, not input values.
[value=""] does work; but ...
How to set a single, main title above all the subplots with Pyplot?
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import numpy as np
fig=plt.figure()
data=np.arange(900).reshape((30,30))
for i in range(1,5):
ax=fig.add_subplot(2,2,i)
ax.imshow(data)
fig.suptitle('Main title') # or plt.suptitle('Main title')
plt.show()
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Get “Value” property in IGrouping
...The group implements IEnumerable<T> - In the general case, just call foreach over the group. In this case, since you need a List<T>:
list.Add(new DespatchGroup(group.Key, group.ToList());
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How do I set the request timeout for one controller action in an asp.net mvc application
I want to increase the request timeout for a specific controller action in my application. I know I can do it in the web.config for the entire application, but I'd rather change it on just this one action.
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What does a \ (backslash) do in PHP (5.3+)?
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\ (backslash) is the namespace separator in PHP 5.3.
A \ before the beginning of a function represents the Global Namespace.
Putting it there will ensure that the function called is from the global namespace, even if there is a function by the same name in the current namespace.
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What does the constant 0.0039215689 represent?
...039215689 is approximately equal to 1/255.
Seeing that this is OpenGL, performance is probably important. So it's probably safe to guess that this was done for performance reasons.
Multiplying by the reciprocal is faster than repeatedly dividing by 255.
Side Note:
If you're wondering why such ...
Which rows are returned when using LIMIT with OFFSET in MySQL?
...18 records, begin with record 9 (OFFSET 8)
you would get the same result form
SELECT column FROM table LIMIT 8, 18
visual representation (R is one record in the table in some order)
OFFSET LIMIT rest of the table
__||__ _______||_______ __||__
/ \ / \ ...
How to enable Ad Hoc Distributed Queries
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don't you need to link the server before your SELECT ?
– Sebastien H.
Mar 21 '14 at 12:06
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