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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
...ts/-JRHTHaIs-jNPLXOQivY/upvotes');
upvotesRef.transaction(function (current_value) {
return (current_value || 0) + 1;
});
For more info, see https://www.firebase.com/docs/transactions.html
UPDATE:
Firebase recently released Cloud Functions. With Cloud Functions, you don't need to create your ow...
How to avoid passing parameters everywhere in play2?
...,value)}
means you can write the following in any template
@import tags._
@context.set("myKey","myValue")
@context.get("myKey")
So it is very readable and nice.
This is the way I chose to go. stian - good advice. Proves it is important to scroll down to see all answers. :)
Passing HTML vari...
How can I analyze Python code to identify problematic areas?
...fied.
Sample output with --min=3:
68:1: 'Fetcher.fetch' 3
48:1: 'Fetcher._read_dom_tag' 3
103:1: 'main' 3
It can optionally also be used via pylint-mccabe or pytest-mccabe, etc.
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ASP.NET MVC HandleError
..., logMessage, filterContext);
logDirectory = (logDirectory + "\\Log_" + LogFileName(DateTime.Now) + ".txt");
StreamWriter streamWriter = null;
try
{
streamWriter = new StreamWriter(logDirectory, true);
streamWriter.WriteLine(logLine);
...
Why should the “PIMPL” idiom be used? [duplicate]
...
Isn't this line illegal since all members are private: cat_->Purr(); Purr() is not accessible from the outside because by deafult it's private. What am I missing here?
– binaryguy
Aug 14 '15 at 9:20
...
What is Linux’s native GUI API?
...t as many other things in Wayland. wayland.freedesktop.org/faq.html#heading_toc_j_8 blog.martin-graesslin.com/blog/2011/08/… etc.
– whitequark
Oct 4 '12 at 9:07
8
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What does cherry-picking a commit with Git mean?
... from a maintenance
branch to a development branch.
$ git checkout rel_2.3
$ git cherry-pick dev~2 # commit F, above
before:
after:
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fo...
AngularJS browser autofill workaround by using a directive
... setInterval(function() {
var prev_val = '';
if (!angular.isUndefined(attrs.xAutoFillPrevVal)) {
prev_val = attrs.xAutoFillPrevVal;
}
if (element.v...
CMake: How to build external projects and include their targets
...txt - just like any other third-party dependency added this way or via find_file / find_library / find_package.
If you want to make use of ExternalProject_Add, you'll need to add something like the following to your CMakeLists.txt:
ExternalProject_Add(project_a
URL ...project_a.tar.gz
PREFIX $...
Undo git reset --hard with uncommitted files in the staging area
...it. But I knew the commit hash, so I was able to do git cherry-pick COMMIT_HASH to restore it.
I did this within a few minutes of losing the commit, so it may work for some of you.
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