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Why does cURL return error “(23) Failed writing body”?
...ious program is finished writing the whole page.
In curl "url" | grep -qs foo, as soon as grep has what it wants it will close the read stream from curl. cURL doesn't expect this and emits the "Failed writing body" error.
A workaround is to pipe the stream through an intermediary program that alwa...
What is an example of the simplest possible Socket.io example?
...id sent from the server
socket.emit('i am client', {data: 'foo!', id: data.id});
});
socket.on('time', function(data) {
addMessage(data.time);
});
socket.on('error', console.error.bind(console));
socket.on('m...
What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
...last digit in the used gem can be "greater than" the given version. E.g., foo ~> a.b.c.d means any version of foo is fine as long as it's still a.b.c.{something} where {something} >= d. See also related question
– michael
Feb 10 '13 at 0:32
...
How can I print variable and string on same line in Python?
...print statement separates the items by a single space:
>>> print "foo","bar","spam"
foo bar spam
or better use string formatting:
print "If there was a birth every 7 seconds, there would be: {} births".format(births)
String formatting is much more powerful and allows you to do some other ...
How to pad zeroes to a string?
...0:03d}'.format(n)) # python >= 2.6 + python 3
004
>>> print('{foo:03d}'.format(foo=n)) # python >= 2.6 + python 3
004
>>> print('{:03d}'.format(n)) # python >= 2.7 + python3
004
String formatting documentation.
...
Is there a performance difference between i++ and ++i in C?
...uld indeed be slower since with ++it you can just return the final value.
Foo Foo::operator++()
{
Foo oldFoo = *this; // copy existing value - could be slow
// yadda yadda, do increment
return oldFoo;
}
Another difference is that with ++i you have the option of returning a reference instead...
How do I create a folder in a GitHub repository?
... store empty folders. Just make sure there's a file in the folder like doc/foo.txt and run git add doc or git add doc/foo.txt, and the folder will be added to your local repository once you've committed (and appear on GitHub once you've pushed it).
...
Does return stop a loop?
...inally always executes and can "override" the return in the try.
function foo() {
try {
for (var i = 0; i < 10; i++) {
if (i % 3 == 0) {
return i; // This executes once
}
}
} finally {
return 42; // But this still executes
...
Check if a key exists inside a json object
...
This code causes esLint issue: no-prototype-builtins
foo.hasOwnProperty("bar")
The suggest way here is:
Object.prototype.hasOwnProperty.call(foo, "bar");
share
|
improve thi...
HTML: Include, or exclude, optional closing tags?
.... Putting end tags won't automatically make parsing more robust:
<p>foo <p>bar</p> baz</p>
will parse as:
<p>foo</p><p>bar</p> baz
It can only help when you validate documents.
...