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Removing colors from output
...
If I do echo "$(tput setaf 1)foo$(tput sgr0) bar" | sed -r "s/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[mGK]//g" | cat -A , I get : foo^O bar$ So I guess some characters are not correctly removed, right ? Do you know how to correct ?
– edi9...
How to 'bulk update' with Django?
...hould be able to use:
ModelClass.objects.filter(name='bar').update(name="foo")
You can also use F objects to do things like incrementing rows:
from django.db.models import F
Entry.objects.all().update(n_pingbacks=F('n_pingbacks') + 1)
See the documentation.
However, note that:
This won't ...
Python naming conventions for modules
...rcase. This leads to imports like the following:
from nib import Nib
from foo import Foo
from spam.eggs import Eggs, FriedEggs
It's a bit like emulating the Java way. One class per file. But with the added flexibility, that you can allways add another class to a single file if it makes sense.
...
Multiline string literal in C#
...nt of a string to form a verbatim string literal:
string query = @"SELECT foo, bar
FROM table
WHERE id = 42";
You also do not have to escape special characters when you use this method, except for double quotes as shown in Jon Skeet's answer.
...
Is it faster to count down than it is to count up?
...
In C to psudo-assembly:
for (i = 0; i < 10; i++) {
foo(i);
}
turns into
clear i
top_of_loop:
call foo
increment i
compare 10, i
jump_less top_of_loop
while:
for (i = 10; i >= 0; i--) {
foo(i);
}
turns into
load i, 10
top_of_loop:
ca...
BAT file: Open new cmd window and execute a command in there
...te to transmit you might consider generating a batch file at runtime:
set foo=Hello, World
set list_me=%userprofile%
set tmpdir=c:\windows\temp
set tmp=%tmpdir%\tmp.foo
del /q /f "%tmp%"
echo.echo %foo%>>"%tmp%"
echo.dir "%list_me%">>>"%tmp"
start cmd.exe "%tmp%"
del /q /f "%tmp...
Call Activity method from adapter
...is way:
Declare interface:
public interface MyInterface{
public void foo();
}
Let your Activity imlement it:
public class MyActivity extends Activity implements MyInterface{
public void foo(){
//do stuff
}
}
Then pass your activity to ListAdater:
public MyAdapter extends ...
Override compile flags for single files
...rce file builds.
You should be able to countermand the -Weffc++ flag for foo.cpp by doing
set_source_files_properties(foo.cpp PROPERTIES COMPILE_FLAGS -Wno-effc++)
This should have the effect of adding -Wno-effc++ after -Weffc++ in the compiler command, and the latter setting wins. To see the ...
How to call a function from a string stored in a variable?
...ble to pass arguments using both of these methods as so
$function_name = 'foobar';
$function_name(arg1, arg2);
call_user_func_array($function_name, array(arg1, arg2));
If the function you are calling belongs to an object you can still use either of these
$object->$function_name(arg1, arg2);...
Reading a plain text file in Java
...s/io/IOUtils.java.html
FileInputStream inputStream = new FileInputStream("foo.txt");
try {
String everything = IOUtils.toString(inputStream);
} finally {
inputStream.close();
}
And even simpler with Java 7:
try(FileInputStream inputStream = new FileInputStream("foo.txt")) {
Stri...