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Using Java 8 to convert a list of objects into a string obtained from the toString() method
...erts Integer stream to String stream, then its reduced as concatenation of all the elements.
Note: This is normal reduction which performs in O(n2)
for better performance use a StringBuilder or mutable reduction similar to F. Böller's answer.
String s = list.stream().map(Object::toString).collec...
Calling C++ class methods via a function pointer
How do I obtain a function pointer for a class member function, and later call that member function with a specific object? I’d like to write:
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AppSettings get value from .config file
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Really helpful as all the other answers using ConfigurationManager do not work if you add your values in the Settings tabs of the project properties as you have described. Thanks.
– The Dumb Radish
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How to fix Hibernate LazyInitializationException: failed to lazily initialize a collection of roles,
...r add fetch=FetchType.EAGER inside your ManyToMany annotations to automatically pull back child entities:
@ManyToMany(fetch = FetchType.EAGER)
A better option would be to implement a spring transactionManager by adding the following to your spring configuration file:
<bean id="transactionMana...
Total number of items defined in an enum
...atic method Enum.GetNames which returns an array representing the names of all the items in the enum. The length property of this array equals the number of items defined in the enum
var myEnumMemberCount = Enum.GetNames(typeof(MyEnum)).Length;
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Vim search and replace selected text
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This quick and simple mapping search for visually highlighted text (without over-writing the h register) and without using the terminal dependant + register:
" search for visually hightlighted text
vnoremap <c-f> y<ESC>/<c-r>"<CR>
If you do...
How to access java-classes in the default-package?
...u can’t use classes in the default package from a named package.
(Technically you can, as shown in Sharique Abdullah's answer through reflection API, but classes from the unnamed namespace are not in scope in an import declaration)
Prior to J2SE 1.4 you could import classes from the default packag...
How to line-break from css, without using ?
...ng spans that you will then display as blocks (just like a <div> actually).
p span {
display: block;
}
<p><span>hello</span><span>How are you</span></p>
share
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Send Email Intent
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The intent chooser says no apps installed to perform this intent when I use ACTION_SENDTO. I'm using Android 4.1.2 and I have an email app installed...
– ffleandro
Nov 28 '12 at 12:06
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Python vs Bash - In which kind of tasks each one outruns the other performance-wise? [closed]
... google shows many results that say that, as Python is byte-compiled is usually faster. I even found this that claims that you can see an improvement of over 2000% on dictionary-based operations.
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