I want to get the pdf file uri, in order to send it via java mail api, the problem that I'm getting null uri. I have tried many solution but not worked with me. Here is the code: GetDocument Method public void getDocument(View view) { Intent intent =
I'm trying to save the email and time of an email i sent, to a table view. The emails send fine, but I get this error (Error: unexpectedly found nil while unwrapping an Optional value) whenever I click the send button. I'm not sure where is the error
Ok, so I am running a Postgres database in Rails 4 and for one of my models Offer the attribute :offer_status should default to declined. Here is my migration: def change create_table :offers do |t| t.integer :offer_status, default: 0 t.timestamps nu
I'm learning WebGL and I'm quite new to Stack Overflow too. So sorry if I do something wrong. My problem is that lighting doesn't quite work. I think I isolated the problem. Some of my uniforms locations are null. Searching for a solution I found out
Set<String> set = new HashSet<String>() { public boolean add(String arg0) { if (arg0 == null) { throw new IllegalArgumentException("Cannot add null to Set"); } return super.add(arg0); } }; set.add("s0"); Set<String> t
My html looks like: <form id="idForm3"> <center> <fieldset style="width:30%;"> <legend>Edit Elements:</legend> Nome:<input type="text" size="20" maxlength="20" value="
Here's my method: public int randomIntegers() { array = new int[20]; Random r = new Random(); for(i =0; i<20; i++) { int intRandom = r.nextInt(1000); if (intRandom >= 100) { array[i] = intRandom; } } return array[i]; } Println: System.out.println(ar
I'm calling a function that takes a pointer to const char, sets this pointer to a constant, static string, and returns it. However, after returning, the pointer is NULL! static const char *test = "my text"; int check(const char *s) { s = test; r
I'm trying to debug pickPlayers. The list "players" is populated successfully after it adds "choice", but when "isPlaying" is called, it's null. Can anyone see why? I made sure to push the first element picked in so it should
I export a third party project to a jar file and set this project as a Library, then import it into my project. All"@+id" in xml files under folder layout have been modified to"@id". And I added ids.xml& public.xml file in the thir
I am working in sqlserver 2008 Security Id Accrued Into Default Accrued Out of Default Amort Into Default Amort Out of Default Security Code Geneva Investment Code Has Position WERE000015 NULL NULL NULL NULL mysec1 02635PTP8 0 WERE000016 NULL NULL NU
I'd like to limit my query to show only rows where a certain field is not empty. I found this thread where someone posed the same question and was told to use IS NOT NULL. I tried that, but I'm still getting rows where the field is empty. What is the
I have created a simple website based on my knowledge but I discovered that it suffers from a Local File Inclusion (LFI) vulnerability. I want to test exploiting it on my computer but whenever I try to bypass with null bytes that doesn't work. I wrot
I'm using the EventKit API to fetch a user's Reminders. The fetch API is done asynchrounously and when the fetch is finished there is a completion block you can use. However after I have fetched the user's Reminders I assign it to the self.eventKitRe
My database table has many columns. I want to do a search based on multiple columns. Sometimes it may not be the value of some columns. How do these fields in sql query to be ineffective? Thank you. for examle: $C1=$_POST[c1]; $C2=$_POST[c2]; SELECT
I am probably missing something obvious (still learning about Objective-C!) but for some reason one of my NSString variables has a null value in my if statement and I don't know why? I have even output to NSLog and I still can't see why it's behaving
Obviously ||= won't work def x? @x_query ||= expensive_way_to_calculate_x end because if it turns out to be false or nil, then expensive_way_to_calculate_x will get run over and over. Currently the best way I know is to put the value into an Array: d
I want to fetch NULL values in Mysql. My query is like this-: Select sc.message FROM shipping_comment sc, sales_flat_order sfo where sfo.shipping_comment_id = sc.shipping_comment_id AND sfo.increment_id = 100000429 so If for the order no. 100000429 i
I'm using "Visual Studio 2010" on "Windows 7 32bit", and I'm working on my "debug" build. In my program I use fopen to access a file using this code: FILE *f = fopen("simple_test.asm", "r"); When I run (F5
Stupid question, I know, but if I don't know whether a variable $var is set or not, should I use isset($var) && !empty($var) to check if it has any value in it, or is !empty($var) enough? Would there be a problem if $var is null in the second case
Newbie here! I've searched high and low but I cannot find an answer that makes sense to me. I'm using iReport 4.1.1 and I want to generate a subreport containing a table using a CSV as my data source. I can successfully generate the subreport as PDF.
This question already has an answer here: Why does null reference print as "null" 3 answers On execution of following line : System.out.println(null); the result comes out to be null printed on console. Why does that happen?Telling from the sour
I would like to prevent further processing on an object if it is null. In the following code I check if the object is null by either: if (!data.Equals(null)) and if (data != null) However, I receive a NullReferenceException at dataList.Add(data). If
I'm working with a COM component which exposes a lot of Variant properties, but sometimes these values are null. When I try to convert these values to string (or another Delphi type) the application raises an exception like this: Could not convert va
I know it is a primitive question but I want to learn the smartest way. I want to loop over the ArrayList<Integer> intList and it can be null. I have 2 ways of doing it if(intList != null) { for(int i = 0; i < intList.size(); i++){ System.out.pri
Currently debugging, and found an if-statement which for no (I thought...) reason gave me an NPE, obviously for a reason. Which seemed to be that the statement turned out to be if(false && (null != null || null != Color)). if(destination != null &
I have a cube that I access via Targit (BI Solution). When I browse / use that cube I want all quantity results to be a zero if null / blank NOT a blank, but no matter what I try I get blanks. I have changed the Null Processing property for the measu
int* p = 0; int* q = &*p; Is this undefined behavior or not? I browsed some related questions, but this specific aspect didn't show up.The answer to this question is: it depends which language standard you are following :-). In C90 and C++, this is n
I have a text source with nulls in it and I need to pull them out along with my regex pattern. Can regex even match a null character? I only realized I had them when my pattern refused to match and when I pasted it into Notepad++ it showed all the nu
In SQL server if you have nullParam=NULL in a where clause, it always evaluates to false. This is counterintuitive and has caused me many errors. I do understand the IS NULL and IS NOT NULL keywords are the correct way to do it. But why does SQL serv
