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What are the uses of the exec command in shell scripts? [closed]
... the current shell, and the return status is 0. If there is a redirection error, the return status is 1. But how does exec actually work to change a file descriptor? Why is this particular command chosen for this task? (Markdown is failing right now?)
– Ray
...
is there a post render callback for Angular JS directive?
...multiple directives on the same element will result in a $compile:multidir Error - see: https://docs.angularjs.org/error/$compile/multidir
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follo...
How do I load an HTML page in a using JavaScript?
... document.getElementById("content").innerHTML = html;
})
.catch((error) => {
console.warn(error);
});
}
XHR API
function load_home (e) {
(e || window.event).preventDefault();
var con = document.getElementById('content')
, xhr = new XMLHttpRequest();
xhr.onread...
Initialize class fields in constructor or at declaration?
...be moved into the top of it.
In terms of best practice the former is less error prone than the latter as someone could easily add another constructor and forget to chain it.
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C# HttpClient 4.5 multipart/form-data upload
.....) contained an invalid boundary character (maybe the "/" separator). No errors, just no files posted into the server - in my case, Context.Request.Files.Count = 0 in API controller. Possibly just a Nancy issue, but I suggest using something like DateTime.Now.Ticks.ToString("x") instead.
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PHPUnit: assert two arrays are equal, but order of elements not important
...ected, $actual), array_diff($actual, $expected)));
For a more detailed error message (while debugging), you can also test like this (thanks @DenilsonSá):
$this->assertSame(array_diff($expected, $actual), array_diff($actual, $expected));
Old version with bugs inside:
$this->assertEmp...
What is attr_accessor in Ruby?
...rson.
class Person
end
person = Person.new
person.name # => no method error
Obviously we never defined method name. Let's do that.
class Person
def name
@name # simply returning an instance variable @name
end
end
person = Person.new
person.name # => nil
person.name = "Dennis" # =...
Angularjs loading screen on ajax request
...
If you get the "elm.show() is not a function" error, you must add jquery before loading angular.
– morpheus05
May 25 '15 at 11:44
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Is it possible to make the -init method private in Objective-C?
...ilable
Add the unavailable attribute to the header to generate a compiler error on any call to init.
-(instancetype) init __attribute__((unavailable("init not available")));
If you don't have a reason, just type __attribute__((unavailable)), or even __unavailable:
-(instancetype) __unavaila...
Track the time a command takes in UNIX/LINUX?
...e builtin overrides that. If I do time -f "\t%E real" ls in bash, I get an error, but it works if I do /usr/bin/time -f "\t%E real" ls.
– Ben Crowell
Jun 17 '17 at 15:24
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