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JavaScript null check
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An “undefined variable” is different from the value undefined.
An undefined variable:
var a;
alert(b); // ReferenceError: b is not defined
A variable with the value undefined:
var a;
alert(a); // Alerts “undefined”
When a function takes an argument, t...
Border around tr element doesn't show?
... individual cells, the other is suitable for borders that are
continuous from one end of the table to the other.
... and later, for collapse setting:
In the collapsing border model, it is possible to specify borders that
surround all or part of a cell, row, row group, column, and column
...
Rails 4: assets not loading in production
...css.erb apparently don't happen automatically. The ^[^_] excludes partials from being compiled -- it's a regexp.
It's a little frustrating that the docs clearly state that asset pipeline IS enabled by default but doesn't clarify the fact that only applies to javascripts.
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What is the yield keyword used for in C#?
...mbers where you were on each additional cycle of the function and picks up from there.
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How to pre-populate the sms body text via an html link
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works great but when done from OSX it opens up a text message To: ?, any idea how to make it show up blank? I tried sms:?body and sms:;?body, the first tries to send to ? and the second tries to send to ;
– Joshua Ohana
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How to enable external request in IIS Express?
...art of that post summarized:
On Vista and Win7, run the following command from an administrative prompt:
netsh http add urlacl url=http://vaidesg:8080/ user=everyone
For XP, first install Windows XP Service Pack 2 Support Tools. Then run the following command from an administrative prompt:
httpcfg ...
adding header to python requests module
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From http://docs.python-requests.org/en/latest/user/quickstart/
url = 'https://api.github.com/some/endpoint'
payload = {'some': 'data'}
headers = {'content-type': 'application/json'}
r = requests.post(url, data=json.dumps(p...
ActionBarCompat: java.lang.IllegalStateException: You need to use a Theme.AppCompat
...theme" option added to the <application> and should leave out styles from other projects. For some reason that wasn't working.
– speedynomads
Sep 16 '15 at 15:00
add a c...
std::vector versus std::array in C++
...;s resize, they reserve more space then they need. This is to prevent them from having to resize every time a new element is inserted. This behavior can be changed by providing a custom allocator, but I never felt the need to do that!
Edit: After reading Zud's reply to the question, I felt I sho...
Standard Android Button with a different color
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Following on from Tomasz's answer, you can also programmatically set the shade of the entire button using the PorterDuff multiply mode. This will change the button colour rather than just the tint.
If you start with a standard grey shad...