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Rails 3 check if attribute changed
...mentation is really good, but it lets you do things such as:
@user.street1_changed? # => true/false
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Using GCC to produce readable assembly?
...line-wrap the machine-code bytes
-Mintel: use GAS/binutils MASM-like .intel_syntax noprefix syntax instead of AT&T
-S: interleave source lines with disassembly.
You could put something like alias disas="objdump -drwCS -Mintel" in your ~/.bashrc
Example:
> gcc -g -c test.c
> objdump -...
How can I know when an EditText loses focus?
...
Kotlin way
editText.setOnFocusChangeListener { _, hasFocus ->
if (!hasFocus) { }
}
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SQL query to get all values a enum can have
...
If you want an array:
SELECT enum_range(NULL::myenum)
If you want a separate record for each item in the enum:
SELECT unnest(enum_range(NULL::myenum))
Additional Information
This solution works as expected even if your enum is not in the default sc...
Android list view inside a scroll view
...
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.appcompat.widget.LinearLayoutCompat
android:layout_width="match_parent"
android:layout_height="wrap_content"
android...
Is there a better alternative than this to 'switch on type'?
...erscore if you don't need access to the object: case UnauthorizedException _:
– Assaf S.
Mar 7 '18 at 10:39
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How can I use jQuery in Greasemonkey scripts in Google Chrome?
...site request policy of the target page applies - (e.g. I had to reinject GM_xmlhttpRequest before seeing that it did not help me). In the end I simply copy pasted the code of jquery.min.js.
– Jean Hominal
Mar 16 '13 at 14:51
...
How to compare if two structs, slices or maps are equal?
...would be better than using reflection):
http://play.golang.org/p/CPdfsYGNy_
m1 := map[string]int{
"a":1,
"b":2,
}
m2 := map[string]int{
"a":1,
"b":2,
}
fmt.Println(reflect.DeepEqual(m1, m2))
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Using HTML5/JavaScript to generate and save a file
...le);
document.getElementById('link').href = url;
<a id="link" target="_blank" download="file.txt">Download</a>
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How do I verify that an Android apk is signed with a release certificate?
...t; jdk < bin path in cmd prompt)
$ jarsigner -verify -verbose -certs my_application.apk
If you see "CN=Android Debug", this means the .apk was signed with the debug key generated by the Android SDK
(means it is unsigned), otherwise you will find something for CN.
For more details see: http://d...