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Why use Ruby's attr_accessor, attr_reader and attr_writer?
...rk correctly no matter how their public API is called.
class Person
attr_accessor :age
...
end
Here, I can see that I may both read and write the age.
class Person
attr_reader :age
...
end
Here, I can see that I may only read the age. Imagine that it is set by the constructor of this ...
Why does the 260 character path length limit exist in Windows?
...iscussed in the following paragraphs), the maximum length for a path is MAX_PATH, which is defined as 260 characters. A local path is structured in the following order: drive letter, colon, backslash, name components separated by backslashes, and a terminating null character. For example, the maximu...
Android getting value from selected radiobutton
...ndroidAppActivity.this,
radioButton.getText(), Toast.LENGTH_SHORT).show();
}
});
}
}
xml
<RadioGroup
android:id="@+id/radio"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RadioButton
...
How to write log to file
...the past, but this works for me:
f, err := os.OpenFile("testlogfile", os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
if err != nil {
log.Fatalf("error opening file: %v", err)
}
defer f.Close()
log.SetOutput(f)
log.Println("This is a test log entry")
Based on the Go docs, os.Open() can't work f...
What is this weird colon-member (“ : ”) syntax in the constructor?
...ring("Name")). It fits in with the constructor better than Foo(int num) : m_Count = 5. Not to mention that classes must be constructed at this point anyway, since it's initialized here. Foo(int num) : Bar = num, wouldn't compile right. It just seems weird seeing Foo(int num) : m_Count(num), since pr...
SHA-1 fingerprint of keystore certificate
...-keypass android
for Release mode:
keytool -list -v -keystore {keystore_name} -alias {alias_name}
example:
keytool -list -v -keystore C:\Users\MG\Desktop\test.jks -alias test
On windows, when keytool command is not found, Go to your installed JDK Directory e.g. <YourJDKPath>\Java\j...
How to “grep” for a filename instead of the contents of a file?
...
@alpha_989, I said grep supports it, which it does: gnu.org/software/grep/manual/html_node/… point is piping to grep is only needed if you need pcre. whereswalden has the right answer
– Dan
...
Windows 7, 64 bit, DLL problems
...
VS2015 vcredist_*.exe installs these DLLs, but other methods, like MSMs supplied with VS do not. vcredist includes these DLLs, and you'll need the minimum required platform. (Note I had to install windows 7 sp1 twice for it to take effect -...
How to find the type of an object in Go?
...that you can get rid of variable t, so t := v.(type) becomes v.(type), and _ = t is no longer needed.
– Akavall
Feb 28 '17 at 6:21
...
How to remove the left part of a string?
...(filename):
if line.startswith(varname + sep):
head, sep_, tail = line.partition(sep) # instead of `str.split()`
assert head == varname
assert sep_ == sep
return tail
Parse INI-like file with ConfigParser
from ConfigParser import SafeConfigParse...