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Value cannot be null. Parameter name: source
...if (graphQLResponse.Errors.Count() > 0)
This exception can be avoided by checking for null instead.
if (graphQLResponse.Errors != null)
代码块超过1.2w编译apk报错问题 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...b4ca4bc2cd66c555d4358bf672a1f10a:5)
[java] Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, position: Lappinventor/ai_admin/AAC_3/Screen1;run(Lgnu/mapping/CallContext;)V, origin: /tmp/1741441639142_3119821055054021632-0/youngandroid...
Copy tables from one database to another in SQL Server
...any indexes and such. If the tables do exist, it will append the new data by default but you can adjust that (edit mappings) so it will delete all existing data.
I use this all the time and it works fairly well.
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Objective-C: Calling selectors with multiple arguments
...n where performMethodsViaSelectors method performs the other class methods by way of selectors:
@implementation ClassForSelectors
- (void) fooNoInputs {
NSLog(@"Does nothing");
}
- (void) fooOneIput:(NSString*) first {
NSLog(@"Logs %@", first);
}
- (void) fooFirstInput:(NSString*) first sec...
How do I encode and decode a base64 string?
...code
public static string Base64Encode(string plainText) {
var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(plainText);
return System.Convert.ToBase64String(plainTextBytes);
}
Decode
public static string Base64Decode(string base64EncodedData) {
var base64EncodedBytes = System.Conver...
How to check if a variable is an integer in JavaScript?
...riable if you set it thusly var my_var=1.0;, which is correctly identified by this function as an integer.
– Blake Regalia
Feb 6 '14 at 19:36
4
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HTML5 Audio stop function
...t an id for your audio element
in your js :
var ply = document.getElementById('player');
var oldSrc = ply.src;// just to remember the old source
ply.src = "";// to stop the player you have to replace the source with nothing
...
Converting a generic list to a CSV string
...
As the code in the link given by @Frank Create a CSV File from a .NET Generic List there was a little issue of ending every line with a , I modified the code to get rid of it.Hope it helps someone.
/// <summary>
/// Creates the CSV from a generic l...
What does this symbol mean in JavaScript?
...amp;=, ||=, ??= — Double ampersand, pipe, or question mark, followed by equal sign: logical assignments
Replace a value if null or undefined in JavaScript
Set a variable if undefined
Ruby’s ||= (or equals) in JavaScript?
Original proposal
Specification
Destructuring
of function parameters...
Getting ssh to execute a command in the background on target machine
... logout due to a race
condition [2]. This problem can also
be overcome by redirecting all three
I/O streams:
nohup myprogram > foo.out 2> foo.err < /dev/null &
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