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Default function arguments in Rust
...could also use an "arguments" struct and the From/Into traits:
pub struct FooArgs {
a: f64,
b: i32,
}
impl Default for FooArgs {
fn default() -> Self {
FooArgs { a: 1.0, b: 1 }
}
}
impl From<()> for FooArgs {
fn from(_: ()) -> Self {
Self::default()...
What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
...
The *args and **kwargs is a common idiom to allow arbitrary number of arguments to functions as described in the section more on defining functions in the Python documentation.
The *args will give you all function parameters as a tuple:
def foo(*args):
for a in a...
Struct Constructor in C++?
...generated. But as general as the question is asked I don't think one can really infer too much about the concrete problem the OP is trying to solve...
– sth
Jul 14 '09 at 20:36
8
...
How do I rename a column in a database table using SQL?
...
Specifically for SQL Server, use sp_rename
USE AdventureWorks;
GO
EXEC sp_rename 'Sales.SalesTerritory.TerritoryID', 'TerrID', 'COLUMN';
GO
share
...
How do you run a crontab in Cygwin on Windows?
...
You need to also install cygrunsrv so you can set cron up as a windows service, then run cron-config.
If you want the cron jobs to send email of any output you'll also need to install either exim or ssmtp (before running cron-config.)
See /usr/...
How to step through Python code to help debug issues?
...
Yes! There's a Python debugger called pdb just for doing that!
You can launch a Python program through pdb by using pdb myscript.py or python -m pdb myscript.py.
There are a few commands you can then issue, which are documented on the pdb page.
Some usef...
How do I pass command line arguments to a Node.js program?
...cripts:
var args = process.argv.slice(2);
Note that the first arg is usually the path to nodejs, and the second arg is the location of the script you're executing.
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improve this answer
...
Why does Clojure have “keywords” in addition to “symbols”?
...vide very fast equality tests...
Symbols are identifiers that are normally used to refer to something else. They can be used in program forms to refer to function parameters, let bindings, class names and global vars...
Keywords are generally used as lightweight "constant strings", e.g. for t...
A definitive guide to API-breaking changes in .NET
... information as possible regarding API versioning in .NET/CLR, and specifically how API changes do or do not break client applications. First, let's define some terms:
...
What's the easiest way to escape HTML in Python?
...
< to &lt;
> to &gt;
& to &amp;
That is enough for all HTML.
EDIT: If you have non-ascii chars you also want to escape, for inclusion in another encoded document that uses a different encoding, like Craig says, just use:
data.encode('ascii', 'xmlcharrefreplace')
Don't for...