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How to join int[] to a character separated string in .NET?
...nts = new int[] {1, 2, 3, 4, 5};
var result = string.Join(",", ints.Select(x => x.ToString()).ToArray());
Console.WriteLine(result); // prints "1,2,3,4,5"
EDIT: As of (at least) .NET 4.5,
var result = string.Join(",", ints.Select(x => x.ToString()).ToArray());
is equivalent to:
var resu...
What is a 'Closure'?
...e a local variable, that variable has a scope. Generally, local variables exist only within the block or function in which you declare them.
function() {
var a = 1;
console.log(a); // works
}
console.log(a); // fails
If I try to access a local variable, most languages will look for it in ...
How to get the difference between two arrays of objects in JavaScript
...ic difference of the two lists by applying the predicate appropriately. (Extra points if it were more efficient than having to run through all m * n comparisons twice!)
– Scott Sauyet
Feb 24 '14 at 12:55
...
【精心整理】【实用】visual C++中最常用的类与API函数 - C/C++ - 清泛网 -...
...态的单选按钮
BS_RADIOBUTTON 单选按钮，不常用
BS_AUTOCHECKBOX 含自动选中状态的复选按钮
BS_CHECKBOX 复选按钮，不常用
BS_AUTO3STATE 含自动选中状态的三态复选按钮
BS_3STATE 三态复选按钮，不常用
以上风格指定了创建的按钮类型，...
What's the difference between StaticResource and DynamicResource in WPF?
...ce will be resolved and assigned to the property during the loading of the XAML which occurs before the application is actually run. It will only be assigned once and any changes to resource dictionary ignored.
A DynamicResource assigns an Expression object to the property during loading but does n...
Missing include “bits/c++config.h” when cross compiling 64 bit program on 32 bit in Ubuntu
...
Adding this answer partially because it fixed my problem of the same issue and so I can bookmark this question myself.
I was able to fix it by doing the following:
sudo apt-get install gcc-multilib g++-multilib
If you've installed a version of gcc / g++ that does...
How can I manipulate the strip text of facet_grid plots?
I'm wondering how I can manipulate the size of strip text in facetted plots. My question
is similar to a question on plot titles , but I'm specifically concerned with
manipulating not the plot title but the text that appears in facet titles (strip_h).
...
How to write log base(2) in c/c++
...
Simple math:
log2 (x) = logy (x) / logy (2)
where y can be anything, which for standard log functions is either 10 or e.
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What is more efficient: Dictionary TryGetValue or ContainsKey+Item?
...property actually has nearly identical code functionality as TryGetValue, except that it will throw an exception instead of returning false.
Using ContainsKey followed by the Item basically duplicates the lookup functionality, which is the bulk of the computation in this case.
...
Python CSV error: line contains NULL byte
...reported by reader.line_num will be (unhelpfully) 1. Find where the first \x00 is (if any) by doing
data = open('my.csv', 'rb').read()
print data.find('\x00')
and make sure that you dump at least that many bytes with repr or od.
What does data.count('\x00') tell you? If there are many, you may w...