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Using reflect, how do you set the value of a struct field?
...oo struct {
Number int
Text string
}
func main() {
foo := Foo{123, "Hello"}
fmt.Println(int(reflect.ValueOf(foo).Field(0).Int()))
reflect.ValueOf(&foo).Elem().Field(0).SetInt(321)
fmt.Println(int(reflect.ValueOf(foo).Field(0).Int()))
}
Prints:
123
321
...
Eclipse HotKey: how to switch between tabs?
...e defined.
They may be inherited from the multipage editor, making them an OS specific shortcut.
Regarding shortcuts on Mac OS (OSX), Matt Ball complained in Sept. 2011 to not being able to remap CTRL+Page Up/CTRL+Page Down:
It drives me nuts to not be able to flip through open tabs as I can ...
Is “double hashing” a password less secure than just hashing it once?
...use an ordered list of the most likely passwords. They start with "password123" and progress to less frequently used passwords.
Let's say an attackers list is long, with 10 billion candidates; suppose also that a desktop system can compute 1 million hashes per second. The attacker can test her who...
Unresolved external symbol on static class members
...le looks like:
//myClass.cpp
void myClass::myFunc()
{
myClass::m_nMyVar = 123; //I tried to use this m_nMyVar here and got link error
}
So I add below code on the top of myClass.cpp
//myClass.cpp
int myClass::m_nMyVar; //it seems redefine m_nMyVar, but it works well
void myClass::myFunc()
{
myCl...
How do I disable orientation change on Android?
...
I've always found you need both
android:screenOrientation="nosensor" android:configChanges="keyboardHidden|orientation"
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Make xargs handle filenames that contain spaces
...layer
This method is simpler and works with the GNU xargs as well.
For MacOS:
ls *.mp3 | tr \\n \\0 | xargs -0 mplayer
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SVG gradient using CSS
...4 24h168c13 0 24-11 24-24l0-47c0-13-11-24-24-24h-21v-190c0-13-11-23-24-23h-123z"></path>
</svg>
<svg height="0" width="0">
<defs>
<linearGradient id="lgrad-p" gradientTransform="rotate(75)"><stop offset="45%" stop-color="#4169e1"><...
What's the proper way to install pip, virtualenv, and distribute for Python?
...pted it to answer my more specific question about installing virtualenv across multiple versions of Python indpendently of system packages - stackoverflow.com/questions/6812207/… - works perfectly.
– lofidevops
Jul 29 '11 at 15:12
...
How to avoid “cannot load such file — utils/popen” from homebrew on OSX
...
The problem mainly occurs after updating OS X to El Capitan (OS X 10.11) or macOS Sierra (macOS 10.12).
This is because of file permission issues with El Capitan’s or later macOS's new SIP process. Try changing the permissions for the /usr/local directory:
$ sud...
Determine if Python is running inside virtualenv
Is it possible to determine if the current script is running inside a virtualenv environment?
16 Answers
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