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Why does Oracle 9i treat an empty string as NULL?
...w that it does consider ' ' as NULL , but that doesn't do much to tell me why this is the case. As I understand the SQL specifications, ' ' is not the same as NULL -- one is a valid datum, and the other is indicating the absence of that same information.
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Open Facebook page from Android app?
...app is installed, of course). For iPhone, there exists the fb:// URL scheme, but trying the same thing on my Android device throws an ActivityNotFoundException .
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The model used to open the store is incompatible with the one used to create the store
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Deleting the app is sometimes not the case! Suggest, your app has already been published! You can't just add new entity to the data base and go ahead - you need to perform migration!
For those who doesn't want to dig into documentation and is sea...
Why does Git say my master branch is “already up to date” even though it is not?
...nd/or misunderstanding what git does and why it does it.
When you clone some other repository, git makes a copy of whatever is "over there". It also takes "their" branch labels, such as master, and makes a copy of that label whose "full name" in your git tree is (normally) remotes/origin/master (b...
commandButton/commandLink/ajax action/listener method not invoked or input value not set/updated
Sometimes, when using <h:commandLink> , <h:commandButton> or <f:ajax> , the action , actionListener or listener method associated with the tag are simply not being invoked. Or, the bean properties are not updated with submitted UIInput values.
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What is the best testing framework to use with Node.js? [closed]
I have looked at the rather long list of testing frameworks at https://github.com/ry/node/wiki/modules#testing . What is the experience with these frameworks?
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How to style dt and dd so they are on the same line?
... background: #dd0
padding: 0;
margin: 0
}
<dl>
<dt>Mercury</dt>
<dd>Mercury (0.4 AU from the Sun) is the closest planet to the Sun and the smallest planet.</dd>
<dt>Venus</dt>
<dd>Venus (0.7 AU) is close in size to Earth, (0.815 Ea...
Can Json.NET serialize / deserialize to / from a stream?
...er(givenStreamReader) is the way to go now
– Antoine Meltzheim
Apr 18 '18 at 12:28
Thank you for taking the time to ed...
ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al
...lso a (boolean)
array. For numpy arrays the & operation returns the elementwise-and of the two
boolean arrays.
The NumPy developers felt there was no one commonly understood way to evaluate
an array in boolean context: it could mean True if any element is
True, or it could mean True if all elem...
How to elegantly check if a number is within a range?
...
There are a lot of options:
int x = 30;
if (Enumerable.Range(1,100).Contains(x))
//true
if (x >= 1 && x <= 100)
//true
Also, check out this SO post for regex options.
shar...