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The differences between .build, .create, and .create! and when should they be used?
...ver, is that these methods can be called through an association (has_many, etc.) to automatically link the two models.
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vector::at vs. vector::operator[]
...of use, flawed reasoning about the continued validity of some earlier test etc. kick in.
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Double not (!!) operator in PHP
...for any true value (numbers other than zero, non-empty strings and arrays, etc.) you will get the boolean value TRUE, and for any false value (0, 0.0, NULL, empty strings or empty arrays) you will get the boolean value FALSE.
It is functionally equivalent to a cast to boolean:
return (bool)$row;
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Convert array of strings into a string in Java
...s you might not really notice the difference, but for large ones it can be orders of magnitude slower.
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Is it possible to have nested templates in Go using the standard library?
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I'll just add here that in order to render the actual templates I had to call tmpl["index.html"].ExecuteTemplate(w, "base", data).
– hermansc
May 16 '13 at 17:08
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Replace a newline in TSQL
...whitespace) extended forms of whitespace (tab, line-feed, carriage-return, etc.), so it's been renamed as "CleanAndTrim" from my original answer. The idea here is that your string doesn't need such extra special-whitespace characters inside it, and so if they don't occur at the head/tail, they shou...
Custom fonts and XML layouts (Android)
...ext context, AttributeSet attrs) {
super(context, attrs);
setCustomFont(context, attrs);
}
public TextViewPlus(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
setCustomFont(context, attrs);
}
private void setCust...
.NET JIT potential error?
...erating the code. Have deleted my original text about reordering of loops etc. A few other answers on here have confirmed that the JIT is unwinding the loop incorrectly when on x86.
To fix the problem you can change the declaration of IntVec to a class and it works in all flavours.
Think this ne...
How can I make one python file run another? [duplicate]
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There are more than a few ways. I'll list them in order of inverted preference (i.e., best first, worst last):
Treat it like a module: import file. This is good because it's secure, fast, and maintainable. Code gets reused as it's supposed to be done. Most Python libraries...
Tomcat: How to find out running tomcat version
...e correct answer. I don't see why you need to write a JSP and deploy it in order to determine the tomcat version. This answer can has wider audience not just programmers, such as system admin just wanting to know exact tomcat version.
– Itherael
Nov 1 '17 at 17...