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What's the best way to set a single pixel in an HTML5 canvas?
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I'd give you another +10 if I could for filing the bug report! :)
– Alnitak
Feb 8 '11 at 17:03
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Change SQLite default settings
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And .headers on , we can see the header of tables.
But I want to know if there is any way make the two default settings?
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adding multiple entries to a HashMap at once in one statement
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@TimoTürschmann Seems that if I ever needed static initialization of a map like this, that it would also be static, eliminating the every time you use it performance penalty - you'd have that penalty once. I can't see any other time that one would want...
what's the meaning of '=?' in angularJS directive isolate scope declaration?
...rent scope property of name defined via the value
of the attr attribute. If no attr name is specified then the
attribute name is assumed to be the same as the local name. Given
<widget my-attr="parentModel"> and widget definition of scope: {
localModel:'=myAttr' }, then widget scope pr...
Multi-line string with extra space (preserved indentation)
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If you're trying to get the string into a variable, another easy way is something like this:
USAGE=$(cat <<-END
This is line one.
This is line two.
This is line three.
END
)
If you indent your string with...
POST data in JSON format
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Not sure if you want jQuery.
var form;
form.onsubmit = function (e) {
// stop the regular form submission
e.preventDefault();
// collect the form data while iterating over the inputs
var data = {};
for (var i = 0, ii = fo...
How to disable an input type=text?
...want to disable writing in an input field of type text using JavaScript, if possible.
The input field is populated from a database; that is why I don't want the user to modify its value.
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Adding 'serial' to existing column in Postgres
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If there is a chance that the target table was created by a different user, you'd need to do ALTER TABLE foo OWNER TO current_user; first.
– DKroot
Apr 6 '18 at 14:47
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numpy matrix vector multiplication [duplicate]
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Other Solutions
Also know there are other options:
As noted below, if using python3.5+ the @ operator works as you'd expect:
>>> print(a @ b)
array([16, 6, 8])
If you want overkill, you can use numpy.einsum. The documentation will give you a flavor for how it works, but honestly,...
How to detect the OS from a Bash script?
...se them between all the computers I use. The problem is I have some OS specific aliases so I was looking for a way to determine if the script is running on Mac OS X, Linux or Cygwin .
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