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What is the difference between “def” and “val” to define a function
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Method def even evaluates on call and creates new function every time (new instance of Function1).
def even: Int => Boolean = _ % 2 == 0
even eq even
//Boolean = false
val even: Int => Boolean = _ % 2 == 0
even eq even
//Boolean = true
With def you ...
What is meant by “managed” vs “unmanaged” resources in .NET?
What is meant by the terms managed resource and unmanaged resource in .NET? How do they come into the picture?
5 Answers
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file_put_contents(meta/services.json): failed to open stream: Permission denied
I am new to Laravel. I was trying to open http://localhost/test/public/ and I got
30 Answers
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Select n random rows from SQL Server table
...th about 50,000 rows in it. I want to select about 5,000 of those rows at random. I've thought of a complicated way, creating a temp table with a "random number" column, copying my table into that, looping through the temp table and updating each row with RAND() , and then selecting from that table...
Checkboxes in web pages – how to make them bigger?
The standard checkboxes rendered in most browsers are quite small and don’t increase in size even when a larger font is used. What is the best, browser-independent way to display larger checkboxes?
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Programmatic equivalent of default(Type)
I'm using reflection to loop through a Type 's properties and set certain types to their default. Now, I could do a switch on the type and set the default(Type) explicitly, but I'd rather do it in one line. Is there a programmatic equivalent of default?
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How can I make a JPA OneToOne relation lazy
...eloping, we noticed that a view was particularly slow. I profiled the view and noticed that there was one query executed by hibernate which took 10 seconds even if there only were two object in the database to fetch. All OneToMany and ManyToMany relations were lazy so that wasn't the problem. Wh...
Convert a String In C++ To Upper Case
...it requires boost, or the title should be changed.
– Andrea
Nov 25 '15 at 11:53
5
This appears to...
Gridview with two columns and auto resized images
...to stretch the column widths, set the spacing to 0 (or whatever you want), and set the number of columns to 2:
res/layout/main.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
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Why use static_cast(x) instead of (int)x?
...l static_cast<>(), reinterpret_cast<>(), const_cast<>(), and dynamic_cast<>(). These four things are completely different.
A static_cast<>() is usually safe. There is a valid conversion in the language, or an appropriate constructor that makes it possible. The only tim...