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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
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The code snippet you gave does indeed load the entire set of data and then counts it client-side, which can be very slow for large amounts of data.
Firebase doesn't currently have a way to count children without loading data, but we do plan to add it.
For now, one solution would be to mai...
Xcode doesn't see my iOS device but iTunes does
...s developed for or lesser.
Otherwise there is some issue with certificates and provisioning profiles. Make sure your device's UDID is added in the provisioning profile you are using.
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improv...
What is phtml, and when should I use a .phtml extension rather than .php?
I'm wondering what the difference between .phtml and .php files is, and when to use one over the other.
6 Answers
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Change text color based on brightness of the covered background area?
... a while already, so now I want to know your opinions, possible solutions, and so on.
8 Answers
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jQuery textbox change event doesn't fire until textbox loses focus?
...out it, you should also bind to mouseup to cater for dragging text around, and add a lastValue variable to ensure that the text actually did change:
var lastValue = '';
$("#textbox").on('change keyup paste mouseup', function() {
if ($(this).val() != lastValue) {
lastValue = $(this).val...
How to make modal dialog in WPF?
I am writing my first application in WPF and want to have the user input some data on a modal dialog window. Apparently, this is not simple to do in WPF, because the parent window stays fully enabled, and the method that created the new child window doesn't stop and wait for the child window to cal...
resizes wrong; appears to have unremovable `min-width: min-content`
... (25 Sept 2017)
The Firefox bug described below is fixed as of Firefox 53 and the link to this answer has finally been removed from Bootstrap's documentation.
Also, my sincere apologies to the Mozilla contributors who had to block removing support for -moz-document partly due to this answer.
The ...
python pandas: apply a function with arguments to a series
I want to apply a function with arguments to a series in python pandas:
4 Answers
4
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How to create a shared library with cmake?
...um_required(VERSION 3.9)
You should declare a project. cmake says it is mandatory and it will define convenient variables PROJECT_NAME, PROJECT_VERSION and PROJECT_DESCRIPTION (this latter variable necessitate cmake 3.9):
project(mylib VERSION 1.0.1 DESCRIPTION "mylib description")
Declare a ne...
JMS Topic vs Queues
I was wondering what is the difference between a JMS Queue and JMS Topic.
9 Answers
9
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