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Remove the last line from a file in Bash
...ith the extension provided as a parameter. Since the parameter is an empty string, no backup file is created. -e tells sed to execute a command. The command $ d means: find the last line ($) and delete it (d).
– Krzysztof Szafranek
Mar 3 '19 at 14:05
...
Django “xxxxxx Object” display customization in admin action sidebar
...
The string you're seeing is coming from __unicode__ method, as others have mentioned. But the thing is that admin saves string representation of an object when it creates log event, therefore if you add __unicode__ implementation...
When should I use GET or POST method? What's the difference between them?
... PHP confuses the concepts a bit. A POST request gets input from the query string and through the request body. A GET request just gets input from the query string. So a POST request is a superset of a GET request; you can use $_GET in a POST request, and it may even make sense to have parameters wi...
Getting Http Status code number (200, 301, 404, etc.) from HttpWebRequest and HttpWebResponse
...nsole.WriteLine("Response Code: " + (int)statusCode + " - " + statusCode.ToString());
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Counting DISTINCT over multiple columns
... the columns, then get the distinct count of instances of the concatenated string.
SELECT count(DISTINCT concat(DocumentId, DocumentSessionId)) FROM DocumentOutputItems;
In MySQL you can do the same thing without the concatenation step as follows:
SELECT count(DISTINCT DocumentId, DocumentSessio...
ReSharper warns: “Static field in generic type”
...public class Test
{
public static void Main()
{
Generic<string>.Foo = 20;
Generic<object>.Foo = 10;
Console.WriteLine(Generic<string>.Foo); // 20
}
}
As you can see, Generic<string>.Foo is a different field from Generic<object>.Foo ...
In Gradle, how do I declare common dependencies in a single place?
...on COMPILE_SDK_VERSION as int
buildToolsVersion BUILD_TOOLS_VERSION as String
defaultConfig {
minSdkVersion MIN_SDK_VERSION as int
targetSdkVersion TARGET_SDK_VERSION as int
versionCode 1
versionName "1.0"
}
}
dependencies {
compile "com.android.suppo...
How does collections.defaultdict work?
... as default_factory, any unknown key will return 0 by default.
Now as the string is passed in the loop, it will increase the count of those alphabets in d.
>>> s = 'mississippi'
>>> d = defaultdict(int)
>>> d.default_factory
<type 'int'>
>>> for k in s:
.....
Determine the type of an object?
...t question, don't use type - use isinstance:
def foo(obj):
"""given a string with items separated by spaces,
or a list or tuple,
do something sensible
"""
if isinstance(obj, str):
obj = str.split()
return _foo_handles_only_lists_or_tuples(obj)
This covers the cas...
Can I replace groups in Java regex?
...(...). I'm assuming you wanted to replace the first group with the literal string "number" and the second group with the value of the first group.
Pattern p = Pattern.compile("(\\d)(.*)(\\d)");
String input = "6 example input 4";
Matcher m = p.matcher(input);
if (m.find()) {
// replace first nu...