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What is C# analog of C++ std::pair?
...port generics:
Tuple<string, int> t = new Tuple<string, int>("Hello", 4);
In previous versions you can use System.Collections.Generic.KeyValuePair<K, V> or a solution like the following:
public class Pair<T, U> {
public Pair() {
}
public Pair(T first, U sec...
BAT file: Open new cmd window and execute a command in there
...n.
What I found out was to use the K switch like this:
start cmd /k echo Hello, World!
start before "cmd" will open the application in a new window and "/K" will execute "echo Hello, World!" after the new cmd is up.
You can also use the /C switch for something similar.
start cmd /C pause
Thi...
String is immutable. What exactly is the meaning? [duplicate]
...ing instance regardless of how many times it appears in your code.
The "hello" creates one instance that is pooled, and the new String(...) creates a non-pooled instance. Try System.out.println(("hello" == "hello") + "," + (new String("hello") == "hello") + "," + (new String("hello") == new Strin...
What are Makefile.am and Makefile.in?
...ted from: http://www.gnu.org/software/automake/manual/html_node/Creating-amhello.html and tested on Ubuntu 14.04 Automake 1.14.1.
Makefile.am
SUBDIRS = src
dist_doc_DATA = README.md
README.md
Some doc.
configure.ac
AC_INIT([automake_hello_world], [1.0], [bug-automake@gnu.org])
AM_INIT_AUTOM...
How can I count text lines inside an DOM element? Can I?
...t;
<div id="content" style="width: 80px; line-height: 20px">
hello how are you? hello how are you? hello how are you? hello how are you?
</div>
</body>
share
|
im...
Python Flask, how to set content type
...ou can try the following method(python3.6.2)：
case one：
@app.route('/hello')
def hello():
headers={ 'content-type':'text/plain' ,'location':'http://www.stackoverflow'}
response = make_response('<h1>hello world</h1>',301)
response.headers = headers
return response
...
Scala: write string to file in one statement
... can easily be made into one line like this: new java.io.PrintWriter("/tmp/hello") { write("file contents"); close }
– Philluminati
Apr 3 at 10:21
...
LaTeX Optional Arguments
...d\sec{ m g }{%
{#1%
\IfNoValueF {#2} { and #2}%
}%
}
(\sec{Hello})
(\sec{Hello}{Hi})
\end{document}
The argument { m g } defines the arguments of \sec; m means "mandatory argument" and g is "optional braced argument". \IfNoValue(T)(F) can then be used to check whether the second ar...
iphone/ipad: How exactly use NSAttributedString?
...dString* attrStr = [NSMutableAttributedString attributedStringWithString:@"Hello World!"];
// for those calls we don't specify a range so it affects the whole string
[attrStr setFont:[UIFont systemFontOfSize:12]];
[attrStr setTextColor:[UIColor grayColor]];
// now we only change the color of "Hello"...
How to trim leading and trailing white spaces of a string?
...ckage main
import (
"fmt"
"strings"
)
func main() {
s := "\t Hello, World\n "
fmt.Printf("%d %q\n", len(s), s)
t := strings.TrimSpace(s)
fmt.Printf("%d %q\n", len(t), t)
}
Output:
16 "\t Hello, World\n "
12 "Hello, World"
...