Fatal error while unwrapping optional value in swift
Vote count: 0 I get a "fatal error: unexpectedly found nil while unwrapping an Optional value" when i try to update a label in swift. There must be something I am missing. These are the two variables involved: Label and Double variable And this is the func where I seem to get the error: Method to up...
in jQuery, what is the difference between $("div") and $("")?
Vote count: 0 I have a code in a book which reads: function hit() { var $d = $("<div>"); $d.addClass("current_hand") .appendTo("#my_hand"); } I know that $("div") will select all the div elements. However what does $("<div>") do? Does it create a new div element? If so, is this the standard way of c...
How to make an Image display/hide using a button
Vote count: 0 I'm using the following code to make an image when a button is pressed: <html> <head> <title>Image Display Test</title> <script type="text/javascript"> <!-- function showImage(){ document.getElementById('loadingImage').style.visibility="visible"; } --> </script> </head> <body> <input t...
Using imshow in opencv without running X
Vote count: 0 I've got an application with a Raspberry Pi ru ing Debian that is pretty performance demanding and I am trying to avoid starting X when booting and jumping directly into the program. This works fine, but if I would like to use the 'imshow' function in OpenCV, it does not work correctly...
How to copy a rotated square BufferedImage part using Java?
Vote count: 0 I want to copy a part of BufferedImage, but the copying form is not a simple square but rather a square rotated on some angle. As an output I want to get the BufferedImage with width and height equals to the copying square size and contents from the initial image, where copying square ...
difference awk print $1, .. $NF and print $0
Vote count: 0 echo "a b c d" |awk '{print}' or echo "a b c d" |awk '{print $0}' retu s a b c d. echo "a b c d" |awk '{print $1, $2, $3, $4}' retu s a b c d Are there any ways to simply do $1, $2, $3, $4 as $hoge alte atively. asked 35 secs agokensuke1984 Let's block ads! (Why?)
Elasticsearch term query for words contain another word
Vote count: 0 My mapping is: "alarmName" : { "type" : "string", "norms" : { "enabled" : false }, "analyzer" : "lowercase_analyzer" } and setting is: "analysis" : { "analyzer" : { "lowercase_analyzer" : { "filter" : [ "lowercase" ], "tokenizer" : "keyword" } } } I index some events with alarmName = "...
keyboard shortcut to jump to find results
Vote count: 0 In ideavim, I have mapped "FundUsages" to a specific key stroke. But is there a action/keyboard short cut to jump to the "Find" results window? If so, is there a action to jump back to the editor window? asked 22 secs agoRaju Kurunkad Let's block ads! (Why?)
Can I use an Objectice-C class in my Swift framework library?
Vote count: 0 I have created a Swift Framework that I use in multiple projects. There is an Objectivce-C class that I would like to use in that is difficult to port in straight Swift. Lets say that class is SFTest #import <CommonCrypto/CommonCrypto.h> @interface SFTest { } + (NString *)myMethod(NSSt...
ActiveModel::ForbiddenAttributesError When Creating New `Task`
Vote count: 0 I am getting an ActiveModel::ForbiddenAttributesError when trying to create a new task. I think I have eliminated all of the stupid errors, so I would love help figuring it out. My tasks_controller is as follows: class TasksController < ApplicationController def index @tasks = current_...
How to convert string to wchar* in unicode
Vote count: 0 I'm trying to define a function like this: #ifdef _UNICODE LPCTSTR A2T(const string& str); #else #define A2T #endif If my project is in Ansi, than A2T(str) is str itself. When my project is in unicode A2T(str) retu a LPCTST type asked 1 min agoXHLin Let's block ads! (Why?)
Aggregates with inner join issue
Vote count: 0 I am having issues getting the aggregate function to work with this adventureworks database example. I'm attempting to get shipping methods whose a ual total due is greater than 5 million but when i uncomment number of employees and distinct number of employees, both total dues end up ...