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In Firebase, is there a way to get the number of children of a node without loading all the node dat
...items, like in this code tracking upvodes:
var upvotesRef = new Firebase('https://docs-examples.firebaseio.com/android/saving-data/fireblog/posts/-JRHTHaIs-jNPLXOQivY/upvotes');
upvotesRef.transaction(function (current_value) {
return (current_value || 0) + 1;
});
For more info, see https://www...
You must enable the openssl extension to download files via https
...
Verify you are editing the correct php.ini file.
Reference:
https://github.com/composer/composer/issues/1440
"WAMP uses different php.ini files in the CLI and for Apache. when you enable php_openssl through the WAMP UI, you enable it for Apache, not for the CLI.
You need to modify C:...
Regex exactly n OR m times
...s", I think a literal translation to regex would be (x{n}|x{m}).
Like this https://regex101.com/r/vH7yL5/1
or, in a case where you can have a sequence of more than m "x"s (assuming m > n), you can add 'following no "x"' and 'followed by no "x", translating to [^x](x{n}|x{m})[^x] but that would a...
XmlSerializer: remove unnecessary xsi and xsd namespaces
...swer to Omitting all xsi and xsd namespaces when serializing an object in .NET, I have updated this post and repeated my answer here from the afore-mentioned link. The example used in this answer is the same example used for the other question. What follows is copied, verbatim.
After reading Micr...
Why #egg=foo when pip-installing from git repo
...to be the same either way. Note that I'm installing using the pip install https://... syntax which doesn't require -e.
– Taylor Edmiston
Aug 8 '17 at 1:43
add a comment
...
Do a “git export” (like “svn export”)?
... I tried : git archive --format=zip --output foo.zip --remote=https://github.com/xxx.git master And got fatal: Operation not supported by protocol. Unexpected end of command stream.
– andyf
Jul 19 '13 at 8:04
...
How to check if a URL is valid
... =~ /\A#{URI::regexp}\z/
If you only want to check for web URLs (http or https), use this:
url =~ /\A#{URI::regexp(['http', 'https'])}\z/
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fo...
.keyCode vs. .which
...e your decision. Be aware that this feature may cease to work at any tim
https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/keyCode
Instead use either: .key or .code depending on what behavior you want:
https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/code
https://devel...
How to put a label on an issue in GitHub if you are not a contributor / owner?
...
GitHub issue templates label auto assignment (December 2018)
https://help.github.com/en/articles/creating-issue-templates-for-your-repository
The issue template feature is much older, but with an update from December 2018 https://github.blog/changelog/2018-12-05-issue-template-automat...
Rename specific column(s) in pandas
...ng columns with df.columns = ...? As shown by Ted Petrou in [this answer],(https://stackoverflow.com/a/46912050/4909087) set_axis is useful when trying to chain methods.
Compare
# new for pandas 0.21+
df.some_method1()
.some_method2()
.set_axis()
.some_method3()
Versus
# old way
df1 = df.some...