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Check if a string contains a number
...mbers in what I'd like to be a numberless string.
I need to enter a string and check to see if it contains any numbers and if it does reject it.
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How to reuse an ostringstream?
I'd like to clear out and reuse an ostringstream (and the underlying buffer) so that my app doesn't have to do as many allocations. How do I reset the object to its initial state?
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Effect of NOLOCK hint in SELECT statements
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NOLOCK typically (depending on your DB engine) means give me your data, and I don't care what state it is in, and don't bother holding it still while you read from it. It is all at once faster, less resource-intensive, and very very dangerous.
You should be warned to never do an update from or ...
Getting attribute using XPath
...he XML document.
To get just the string value of this attribute use the standard XPath function string():
string(/*/book[1]/title/@lang)
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How to ISO 8601 format a Date with Timezone Offset in JavaScript?
Goal: Find the local time and UTC time offset then construct the URL in following format.
10 Answers
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Rails new vs create
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Within Rails' implementation of REST new and create are treated differently.
An HTTP GET to /resources/new is intended to render a form suitable for creating a new resource, which it does by calling the new action within the controller, which creates a new unsaved...
Why does `a == b or c or d` always evaluate to True?
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In many cases, Python looks and behaves like natural English, but this is one case where that abstraction fails. People can use context clues to determine that "Jon" and "Inbar" are objects joined to the verb "equals", but the Python interpreter is more...
How to print to console in pytest?
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By default, py.test captures the result of standard out so that it can control how it prints it out. If it didn't do this, it would spew out a lot of text without the context of what test printed that text.
However, if a test fails, it will include a section in the res...
Remove a git commit which has not been pushed
.... Do your future self a favor: The difference between reset, reset --soft, and reset --hard (What happens to your earlier git add aka "your work" :) Picture: link
– user18099
Jun 9 '17 at 10:00
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Question mark (?) in XML attributes for Android
Can anyone explain the question mark means in Android XML attributes?
2 Answers
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