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Convert .pem to .crt and .key
...t: it consists of the DER format base64 encoded with additional header and footer lines. On input PKCS#8 format private keys are also accepted. The NET form is a format is described in the NOTES section.
-outform DER|NET|PEM
This specifies the output format, the options have the same meaning ...
pass **kwargs argument to another function with **kwargs
... answer, the following is an example that'll show you the difference:
def foo(**kwargs):
for entry in kwargs.items():
print("Key: {}, value: {}".format(entry[0], entry[1]))
# call using normal keys:
foo(a=1, b=2, c=3)
# call using an unpacked dictionary:
foo(**{"a": 1, "b":2, "c":3})
...
URL matrix parameters vs. query parameters
...ls of resources and sub-resources:
http://example.com/res/categories;name=foo/objects;name=green/?page=1
It really comes down to namespacing.
Note: The 'levels' of resources here are categories and objects.
If only query parameters were used for a multi-level URL, you would end up with
http:...
Convert JSON String to JSON Object c#
...n = JsonConvert.DeserializeObject(str);
or try for a typed object try:
Foo json = JsonConvert.DeserializeObject<Foo>(str)
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Difference between \A \z and ^ $ in Ruby regular expressions
...
Difference By Example
/^foo$/ matches any of the following, /\Afoo\z/ does not:
whatever1
foo
whatever2
foo
whatever2
whatever1
foo
/^foo$/ and /\Afoo\z/ all match the following:
foo
...
Serializing class instance to JSON
...thon dict and if your class is simple it will be JSON serializable.
class Foo(object):
def __init__(self):
self.x = 1
self.y = 2
foo = Foo()
s = json.dumps(foo) # raises TypeError with "is not JSON serializable"
s = json.dumps(foo.__dict__) # s set to: {"x":1, "y":2}
The abo...
What are the rules for JavaScript's automatic semicolon insertion (ASI)?
...as a semicolon)
and due to this reason, the classic example of
return
{
foo: 1
}
will not work as expected, because the JavaScript interpreter will treat it as:
return; // returning nothing
{
foo: 1
}
There has to be no line-break immediately after the return:
return {
foo: 1
}
for it t...
How do I determine the size of my array in C?
...
And then you need to send an integer, so you code it up like this:
int foo = 4711;
send(&foo, sizeof (int));
Now, you've introduced a subtle way of shooting yourself in the foot, by specifying the type of foo in two places. If one changes but the other doesn't, the code breaks. Thus, alway...
Really Cheap Command-Line Option Parsing in Ruby
...nd chmod it +x:
$ ./test
./test: Quiet= Interactive=, ARGV=[]
$ ./test -q foo
./test: Quiet=true Interactive=, ARGV=["foo"]
$ ./test -q -i foo bar baz
./test: Quiet=true Interactive=true, ARGV=["foo", "bar", "baz"]
$ ./test -q=very foo
./test: Quiet=very Interactive=, ARGV=["foo"]
See ruby -h for...
Why should casting be avoided? [closed]
... I don't think those are inherently red flags. If you have a Foo object that inherits from Bar, and you store that in a List<Bar>, then you're going to need casts if you want that Foo back. Perhaps it indicates a problem at an architectural level (why are we storing Bars instead ...