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Why can't I define a default constructor for a struct in .NET?
...ublic struct Tempo
{
const double DefaultBpm = 120;
private double _bpm; // this field must not be modified other than with its property.
public double BeatsPerMinute
{
get => _bpm + DefaultBpm;
set => _bpm = value - DefaultBpm;
}
}
This is different than...
Python pandas: fill a dataframe row by row
... I see. So the loc attribute of the data frame defines a special __setitem__ that does the magic I suppose.
– xApple
Jun 13 '13 at 16:24
...
Print string to text file
...
text_file = open("Output.txt", "w")
text_file.write("Purchase Amount: %s" % TotalAmount)
text_file.close()
If you use a context manager, the file is closed automatically for you
with open("Output.txt", "w") as text_file:
t...
How to convert a string from uppercase to lowercase in Bash? [duplicate]
...r case to lower case. All the search results show approaches of using tr command.
7 Answers
...
E11000 duplicate key error index in mongodb mongoose
...dexed field, the index build will fail with a duplicate key error.
You can combine the unique constraint with the sparse index to filter these null values from the unique index and avoid the error.
unique indexes
Sparse indexes only contain entries for documents that have the indexed field, even i...
MySQL “incorrect string value” error when save unicode string in Django
...rs and store them in MySQL. Just changing mysql charset to utf8mb4 via SQL commands is not enough!
– Xerion
Aug 6 '15 at 4:24
...
Switching the order of block elements with CSS [duplicate]
...use you only need to support a single modern browser: Mobile Safari.
See: http://jsfiddle.net/thirtydot/hLUHL/
You can remove the -moz- prefixed properties if you like, I just left them in for future readers.
#blockContainer {
display: -webkit-box;
display: -moz-box;
...
Efficient way to determine number of digits in an integer
...when the architecture expands to 256 bit integers. You need to remember to come back and modify this code. In real life that will not happen and sice this is probably going to be used to build a buffer of the correct size you are now opening yourself to all sorts of buffer over run problems on large...
Performing Inserts and Updates with Dapper
...deciding on APIs and if this goes in core or not. See: https://code.google.com/archive/p/dapper-dot-net/issues/6 for progress.
In the mean time you can do the following
val = "my value";
cnn.Execute("insert into Table(val) values (@val)", new {val});
cnn.Execute("update Table set val = @val whe...
Stop and Start a service via batch or cmd file?
...ut, etc) and for many errors will simply return Errorlevel 2.
Look here: http://ss64.com/nt/net_service.html
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