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Preview an image before it is uploaded
... }
reader.readAsDataURL(input.files[0]); // convert to base64 string
}
}
$("#imgInp").change(function() {
readURL(this);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form runat="server">
<input type='f...
Two way/reverse map [duplicate]
...
Got some extra brackets in there: reverse_map = dict(reversed(item) for item in forward_map.items())
– Andriy Drozdyuk
Dec 12 '11 at 17:30
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Why do we have to specify FromBody and FromUri?
..., bool, double, and so forth), plus TimeSpan, DateTime, Guid, decimal, and string, plus any type with a type converter that can convert from a string.
For complex types, Web API tries to read the value from the message body, using a media-type formatter.
So, if you want to override the above defau...
Loader lock error
...n was thrown.
I overcame this error by creating the object-instance in an extra thread:
ThreadStart threadRef = new ThreadStart(delegate { m_ComObject = Activator.CreateInstance(Type.GetTypeFromProgID("Fancy.McDancy")); });
Thread myThread = new Thread(threadRef);
myThread.Start();
myThread.Join(...
Proper use of the IDisposable interface
...d objects.
public class LoggingContext : IDisposable {
public Finicky(string name) {
Log.Write("Entering Log Context {0}", name);
Log.Indent();
}
public void Dispose() {
Log.Outdent();
}
public static void Main() {
Log.Write("Some initial stuff."...
Duplicate log output when using Python logging module
...dundant with logging.getLogger? since you really just want to avoid adding extra handlers, it seems like you'd prefer the answers below that check for handlers directly
– mway
Sep 24 '19 at 16:29
...
Where do I find the bashrc file on Mac?
...reating .bash_profile if it doesn't exist.) Then you don't have to add the extra step of checking for ~/.bashrc in your .bash_profile
Are you comfortable working and editing in a terminal? Just in case, ~/ means your home directory, so if you open a new terminal window that is where you will be "lo...
How to handle Objective-C protocols that contain properties?
...
@interface MyClass () // Class extension
@property (nonatomic, strong) NSString *name;
@end
How to use property in protocol
So to use MyClass with that name property, we have to do either
Declare the property again (AppDelegate.h does this way)
@interface MyClass : NSObject <MyProtocol&...
For homebrew mysql installs, where's my.cnf?
...s-file=# Only read default options from the given file #.
--defaults-extra-file=# Read this file after the global files are read.
As you can see, there are also some options for bypassing the conf files, or specifying other files to read when you invoke mysql on the command line.
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What are the -Xms and -Xmx parameters when starting JVM?
...nary_prefix. In addition, because some unusable space is set aside for an extra pool of Survivor space, the amount of memory actually available according to Runtime.getRuntime().maxMemory() is less than the value specified via -Xmx
– nealmcb
Sep 30 '15 at 5:20...