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Getting an “ambiguous redirect” error
... all return different error messages for basically the same error:
$ echo hello >
bash: syntax error near unexpected token `newline`
$ echo hello > ${NONEXISTENT}
bash: ${NONEXISTENT}: ambiguous redirect
$ echo hello > "${NONEXISTENT}"
bash: : No such file or directory
Adding quotes ar...
Perl build, unit testing, code coverage: A complete working example
...reate a "lib" directory and a "t" directory under your project directory:
HelloPerlBuildWorld
|
|----------> lib
|
|----------> t
In the "lib" directory, create a text file named "HelloPerlBuildWorld.pm". This file is your Perl module that you will be buildi...
Get nth character of a string in Swift programming language
...s opposed to refactoring the entire project. Make your choice.
let str = "Hello, world!"
let index = str.index(str.startIndex, offsetBy: 4)
str[index] // returns Character 'o'
let endIndex = str.index(str.endIndex, offsetBy:-2)
str[index ..< endIndex] // returns String "o, worl"
String(str.suf...
What is the difference between char array and char pointer in C?
... a pointer, so if you try to pass an array to it like this:
char s[10] = "hello";
printSomething(s);
The compiler pretends that you wrote this:
char s[10] = "hello";
printSomething(&s[0]);
share
|
...
Sort Dictionary by keys
...
@IvicaM. Hello! I understood how I can to sort dictionary by keys, but I don't understand how can I sort array of elements in dictionary. Please help me. For example private var contacts: [(String, [User])] = []
–...
Abort makefile if variable not set
...
If you need a custom error message, add it after the ?:
$ cat Makefile
hello:
echo "hello $${name:?please tell me who you are via \$$name}"
$ make hello
echo "hello ${name:?please tell me who you are via \$name}"
/bin/sh: name: please tell me who you are via $name
make: *** [hello] Erro...
JUnit test for System.out.println()
...rr);
}
sample test cases:
@Test
public void out() {
System.out.print("hello");
assertEquals("hello", outContent.toString());
}
@Test
public void err() {
System.err.print("hello again");
assertEquals("hello again", errContent.toString());
}
I used this code to test the command line...
How to Set Variables in a Laravel Blade Template
...ngine The Following Ways:
1. General PHP Block
Setting Variable: <?php $hello = "Hello World!"; ?>
Output: {{$hello}}
2. Blade PHP Block
Setting Variable: @php $hello = "Hello World!"; @endphp
Output: {{$hello}}
share
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raw vs. html_safe vs. h to unescape html
...will prevent your string from being escaped.
<%= "<script>alert('Hello!')</script>" %>
will put:
&lt;script&gt;alert(&#x27;Hello!&#x27;)&lt;/script&gt;
into your HTML source (yay, so safe!), while:
<%= "<script>alert('Hello!')</script>"...
Confused about Service vs Factory
...just a constructor function
// that will be called with 'new'
this.sayHello = function(name) {
return "Hi " + name + "!";
};
});
app.factory('myFactory', function() {
// factory returns an object
// you can run some code before
return {
sayHello : function(name) {
retu...