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Strings as Primary Keys in SQL Database [closed]
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Technically yes, but if a string makes sense to be the primary key then you should probably use it. This all depends on the size of the table you're making it for and the length of the string that is going to be the primary key (longer strings =...
Better way of getting time in milliseconds in javascript?
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Try Date.now().
The skipping is most likely due to garbage collection. Typically garbage collection can be avoided by reusing variables as much as possible, but I can't say specifically what methods you can use to reduce garbage coll...
How to set a default value for a datetime column to record creation time in a migration?
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This is supported now in Rails 5.
Here is a sample migration:
class CreatePosts < ActiveRecord::Migration[5.0]
def change
create_table :posts do |t|
t.datetime :modified_at, default: -> { 'CURRENT_TIMESTAMP' }
t.time...
Find element's index in pandas Series
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This solution only works if your series has a sequential integer index. If your series index is by datetime, this doesn't work.
– Andrew Medlin
Jul 7 '18 at 11:45
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Convert InputStream to BufferedReader
...provides bytes, converting these to text means the encoding must be known. If you don't specify it, the system default is assumed.
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Correct approach to global logging in Golang
What's the pattern for application logging in Go? If I've got, say, 5 goroutines I need to log from, should I...
7 Answers...
How to get a microtime in Node.js?
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Date.now() please.
– jAndy
Jul 30 '12 at 16:35
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Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers
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You need to specify data, index and columns to DataFrame constructor, as in:
>>> pd.DataFrame(data=data[1:,1:], # values
... index=data[1:,0], # 1st column as index
... columns=data[0,1:]) # 1st row...
How to obtain the start time and end time of a day?
... // Represents an entire day, without time-of-day and without time zone.
.now( // Capture the current date.
ZoneId.of( "Asia/Tokyo" ) // Returns a `ZoneId` object.
) // Returns a `LocalDate` object.
.atStartOfDay( // Det...
Add line break to 'git commit -m' from the command line
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@MohamadAli, on Windows, commandline parsing works differently
– Simon Richter
Nov 3 '15 at 19:43
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