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Using curl POST with variables defined in bash script functions
...script. This saves you from all sort of headaches concerning shell quoting and makes it easier to read an maintain the script than feeding the post data on curl's invocation line as in your attempt:
generate_post_data()
{
cat <<EOF
{
"account": {
"email": "$email",
"screenName": "...
How to tag an older commit in Git?
We are new to git, and I want to set a tag at the beginning of our repository.
Our production code is the same as the beginning repository, but we've made commits since then.
A tag at the beginning would allow us to "roll back" production to a known, stable state.
...
How to calculate a logistic sigmoid function in Python?
...uld do it:
import math
def sigmoid(x):
return 1 / (1 + math.exp(-x))
And now you can test it by calling:
>>> sigmoid(0.458)
0.61253961344091512
Update: Note that the above was mainly intended as a straight one-to-one translation of the given expression into Python code. It is not t...
In Django - Model Inheritance - Does it allow you to override a parent model's attribute?
... is to create an abstract model representing a "Place", eg. AbstractPlace, and inherit from it:
class AbstractPlace(models.Model):
name = models.CharField(max_length=20)
rating = models.DecimalField()
class Meta:
abstract = True
class Place(AbstractPlace):
pass
class Long...
How does the “this” keyword work?
...ere doesn't appear to be a clear explanation of what the this keyword is and how it is correctly (and incorrectly) used in JavaScript on the Stack Overflow site.
...
R: rJava package install failing
When installing rJava using the install.packages("rJava") command I get the following error:
16 Answers
...
How to iterate over a JavaScript object?
...{
console.log(key, yourobject[key]);
}
With ES6, if you need both keys and values simultaneously, do
for (let [key, value] of Object.entries(yourobject)) {
console.log(key, value);
}
To avoid logging inherited properties, check with hasOwnProperty :
for (let key in yourobject) {
if (y...
How to check if there's nothing to be committed in the current branch?
... goal is to get an unambiguous status that can be evaluated in a shell command.
9 Answers
...
How to return dictionary keys as a list in Python?
...keys()).
This will convert the dict_keys object to a list.
On the other hand, you should ask yourself whether or not it matters. The Pythonic way to code is to assume duck typing (if it looks like a duck and it quacks like a duck, it's a duck). The dict_keys object will act like a list for most pu...
Convert NSArray to NSString in Objective-C
... @TechZen - no, because [array description] inserts newlines and the outer parentheses.
– Dave DeLong
Dec 1 '09 at 21:05
...