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Why are const parameters not allowed in C#?
...ially for C++ developers. In C++ we used to mark a parameter as const in order to be sure that its state will not be changed in the method. There are also other C++ specific reasons, like passing const ref in order to pass by ref and be sure that state will not be changed. But why can't we mark ...
Can I have multiple background images using CSS?
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CSS3 allows this sort of thing and it looks like this:
body {
background-image: url(images/bgtop.png), url(images/bg.png);
background-repeat: repeat-x, repeat;
}
The current versions of all the major browsers now suppor...
Avoid modal dismiss on enter keypress
...d the <a> items, I guess it's something else. The code I use is basically the sample code on the bootstrap page, just with a form added inside
– Luke Morgan
May 2 '12 at 10:54
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How do you get a Golang program to print the line number of the error it just called?
...take a look at https://github.com/ztrue/tracerr
I created this package in order to have both stack trace and source fragments to be able to debug faster and log errors with much more details.
Here is a code example:
package main
import (
"io/ioutil"
"github.com/ztrue/tracerr"
)
func mai...
iPhone Keyboard Covers UITextField
...ViewController instance from the UIWindow.rootViewController hierarchy. In order to properly uncover UITextField/UITextView on it, topMostViewController.view's frame needs to be adjusted.
Step3:- Calculated expected move distance of topMostViewController.view with respect to first responded UITextF...
What is the method for converting radians to degrees?
I run into this occasionally and always forget how to do it.
12 Answers
12
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What is x after “x = x++”?
... I know this is super old, but I have a question. Is the above order of operation guaranteed by the standard? Is it possible that the assignment is executed before the increment?
– Emerald Weapon
Apr 24 '16 at 14:35
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How do I specify unique constraint for multiple columns in MySQL?
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That way combination of three would be unique? Or all individual three columns would be unique?
– Gary Lindahl
Sep 15 '11 at 0:03
100
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In log4j, does checking isDebugEnabled before logging improve performance?
...nd once in debug() method. The cost of invoking isDebugEnabled() is in the order of 5 to 30 nanoseconds which should be negligible for most practical purposes. Thus, option 2 is not desirable because it pollutes your code and provides no other gain.
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Getting a structural type with an anonymous class's methods from a macro
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