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Python: Append item to list N times
...
For immutable data types:
l = [0] * 100
# [0, 0, 0, 0, 0, ...]
l = ['foo'] * 100
# ['foo', 'foo', 'foo', 'foo', ...]
For values that are stored by reference and you may wish to modify later (like sub-lists, or dicts):
l = [{} for x in range(100)]
(The reason why the first method is only a...
Indenting #defines
..., you'll eventually end up with even weirder looking code.
#if COND1
void foo() {
#if COND2
int i;
#if COND3
i = someFunction()
cout << i << eol;
#endif
#endif
}
#endif
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How to configure an existing git repo to be shared by a UNIX group
...t only been writable by me. I want to open it up to some UNIX user group, foo, so that all members of foo can push to it. I'm aware that I can easily set up a new git repo with:
...
How to `go test` all tests in my project?
...my-packages/...
This should run all tests with import path prefixed with foo/:
$ go test foo/...
This should run all tests import path prefixed with foo:
$ go test foo...
This should run all tests in your $GOPATH:
$ go test ...
...
The preferred way of creating a new element with jQuery
...first option gives you more flexibilty:
var $div = $("<div>", {id: "foo", "class": "a"});
$div.click(function(){ /* ... */ });
$("#box").append($div);
And of course .html('*') overrides the content while .append('*') doesn't, but I guess, this wasn't your question.
Another good practice is...
Entity Framework: “Store update, insert, or delete statement affected an unexpected number of rows (
... error as it doesn't yet exist in the database. Here is my code:
MyObject foo = new MyObject()
{
someAttribute = someValue
};
context.Entry(foo).State = EntityState.Modified;
context.SaveChanges();
Yes, this seems daft, but it arose because the method in question used to have foo passed to i...
Is the primary key automatically indexed in MySQL?
...exes.
For instance, if you created a table as such
CREATE TABLE mytable (foo INT NOT NULL PRIMARY KEY, bar INT NOT NULL, baz INT NOT NULL,
UNIQUE(foo), INDEX(foo)) ENGINE=InnoDB;
because you want to index the primary key and enforce an uniqueness constraint on it, you'd actually end up creatin...
No generic implementation of OrderedDictionary?
... Assert.AreEqual(0, od.Count);
Assert.AreEqual(-1, od.IndexOf("foo"));
od.Add("foo", "bar");
Assert.AreEqual(1, od.Count);
Assert.AreEqual(0, od.IndexOf("foo"));
Assert.AreEqual(od[0], "bar");
Assert.AreEqual(od["foo"], "bar");...
Undo a merge by pull request?
... so, e.g.:
git fetch upstream
git checkout upstream/master -b revert/john/foo_and_bar
Taking a look at the commit log, you should find something similar to this:
commit b76a5f1f5d3b323679e466a1a1d5f93c8828b269
Merge: 9271e6e a507888
Author: Tim Tom <tim@tom.com>
Date: Mon Apr 29 06:12:3...
How to check for a JSON response using RSpec?
...en you can make your assertions against that parsed content.
parsed_body["foo"].should == "bar"
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