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Ordering by specific field value first
...ou never know.
Second, pay attention to how FIELD() works: it returns the one-based index of the value - in the case of FIELD(priority, "core"), it'll return 1 if "core" is the value. If the value of the field is not in the list, it returns zero. This is why DESC is necessary unless you specify a...
How to decide when to use Node.js?
...ould create immense load on the server, because each active client eats up one server process. This situation amounts to a tarpit attack. When you use something like Node.js, the server has no need of maintaining separate threads for each open connection.
This means you can create a browser-based...
Pandas DataFrame Groupby two columns and get counts
...ndas as pd
df = pd.DataFrame([['A','C','A','B','C','A','B','B','A','A'], ['ONE','TWO','ONE','ONE','ONE','TWO','ONE','TWO','ONE','THREE']]).T
df.columns = [['Alphabet','Words']]
print(df) #printing dataframe.
This is our printed data:
For making a group of dataframe in pandas and counter,
You...
Extract file basename without path and extension in bash [duplicate]
...
The basename command has two different invocations; in one, you specify just the path, in which case it gives you the last component, while in the other you also give a suffix that it will remove. So, you can simplify your example code by using the second invocation of basename. ...
How to set downloading file name in ASP.NET Web API
...
For anyone curious about the "attachment" disposition type, the full list of disposition types is at iana.org/assignments/cont-disp/cont-disp.xhtml
– sfuqua
Sep 30 '14 at 18:56
...
uppercase first character in a variable with bash
... Despite being more complex than the best scored answer, this one actually does exactly that: 'uppercase first character in a variable'. Best scored answer does not have that results. Looks like simple answers are upvoted more willingly than the correct ones?
– Krz...
What is a plain English explanation of “Big O” notation?
...integers. But a comparison of two algorithms to do arithmetic operations (one multiplication, one addition) will tell you something meaningful;
representation: Big-O (in its simplest form) reduces the comparison between algorithms to a single variable. That variable is chosen based on observations...
How are 3D games so efficient? [closed]
...render, and
They take special advantage of your hardware.
For instance, one easy optimization you can make involves not actually trying to draw things that can't be seen. Consider a complex scene like a cityscape from Grand Theft Auto IV. The renderer isn't actually rendering all of the buildings...
Adding options to a using jQuery?
...re details.
$('#select').append($('<option>', {value:1, text:'One'}));
$('#select').append('<option value="1">One</option>');
var option = new Option(text, value); $('#select').append($(option));
...
SQL select only rows with max value on a column [duplicate]
...me group identifier. I heard that a lot during my career. Actually, it was one the questions I answered in my current job's technical interview.
It is, actually, so common that StackOverflow community has created a single tag just to deal with questions like that: greatest-n-per-group.
Basically,...