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Is it safe to delete a NULL pointer?
... can be several other pointers pointing to the same object even if you set one to NULL on deletion.
– sth
Nov 16 '10 at 2:47
13
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JavaScript plus sign in front of function expression
...laration rather than a function expression and so the () following it (the ones at the end of the line above) would be a syntax error (as would the absense of a name, in that example). With the +, it makes it a function expression, which means the name is optional and which results in a reference to...
Use of 'use utf8;' gives me 'Wide character in print'
...;'
233:184:161:10
The first three bytes make up your character, the last one is the line-feed.
The call to print sends these four characters to STDOUT. Your console then works out how to display these characters. If your console is set to use UTF8, then it will interpret those three bytes as your...
Creating a blurring overlay view
...hCGImage:theImage.CGImage];
// setting up Gaussian Blur (we could use one of many filters offered by Core Image)
CIFilter *filter = [CIFilter filterWithName:@"CIGaussianBlur"];
[filter setValue:inputImage forKey:kCIInputImageKey];
[filter setValue:[NSNumber numberWithFloat:15.0f] fo...
Invalidating JSON Web Tokens
...
I too have been researching this question, and while none of the ideas below are complete solutions, they might help others rule out ideas, or provide further ones.
1) Simply remove the token from the client
Obviously this does nothing for server side security, but it does stop ...
How do you configure an OpenFileDialog to select folders?
...ept only folders. Ever since I've seen this I've wanted to know how it's done. I am aware of the FolderBrowserDialog, but I've never really liked that dialog. It starts too small and doesn't let me take advantage of being able to type a path.
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Calling the base constructor in C#
... are trying to explain, and you are right. If you have two constructors in one class, you can reference one from the other by using the "this" keyword similarly to how you use "base" when calling the inherited constructor. However, this isn't what the OP asked for so this isn't really the place to a...
Can anyone explain this strange behavior with signed floats in C#?
...rison of two different, but semantically identical, values.
When at least one field is not 8 bytes wide, CanCompareBits returns false, and the code proceeds to use reflection to loop over the fields and call Equals for each value, which correctly treats -0.0 as equal to 0.0.
Here is the source for...
Java HTTPS client certificate authentication
... to connect to whichever server presents a certificate which was signed by one of the truststore's CA's.
To generate it you can use the standard Java keytool, for example;
keytool -genkey -dname "cn=CLIENT" -alias truststorekey -keyalg RSA -keystore ./client-truststore.jks -keypass whatever -store...
Uppercase Booleans vs. Lowercase in PHP
...--like in java, but to each there own. I'd wish however they'd settle on ONE way and just make us all change over to one or the other!!!!! This isn't a flexibility I really need to have!
– Ray
Oct 24 '12 at 15:42
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