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Fastest way to implode an associative array with keys
...function. So, if it's not for a URL, is this really faster than array_walk and what if you don't want it encoded?
– e-motiv
Jan 31 '14 at 23:12
10
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Are soft deletes a good idea? [duplicate]
... to include a WHERE IsDeleted = false clause in every query on this table (and so much worse if you're JOINing these tables). A mistake here would be caught as soon as a user or tester noticed a deleted record showing up again, which might take some time. Also, it would be easy for a developer to ...
How to select the row with the maximum value in each group
... Accessing the auto-named column. Run it without it to understand better.
– Arun
Jun 1 '16 at 14:19
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Original purpose of ? [closed]
...lude such a description):
type=hidden
These fields should not be rendered and provide a means for servers to store state information with a form. This will be passed back to the server when the form is submitted, using the name/value pair defined by the corresponding attributes. This is a work arou...
MongoDB/Mongoose querying at a specific date?
...() function, the month argument starts counting at 0, not 1. On the other hand, the days start counting at 1... details
– Mark Stosberg
Jan 18 '14 at 0:09
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How does cookie based authentication work?
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A cookie is basically just an item in a dictionary. Each item has a key and a value. For authentication, the key could be something like 'username' and the value would be the username. Each time you make a request to a website, your browser will include the cookies in the request, and the host s...
How can I select rows with most recent timestamp for each key value?
I have a table of sensor data. Each row has a sensor id, a timestamp, and other fields. I want to select a single row with latest timestamp for each sensor, including some of the other fields.
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Pandas read_csv low_memory and dtype options
...emory warning is because guessing dtypes for each column is very memory demanding. Pandas tries to determine what dtype to set by analyzing the data in each column.
Dtype Guessing (very bad)
Pandas can only determine what dtype a column should have once the whole file is read. This means nothing can...
How to bind multiple values to a single WPF TextBlock?
... </TextBlock.Text>
</TextBlock>
Giving Name a value of Foo and ID a value of 1, your output in the TextBlock would then be Foo + 1.
Note: that this is only supported in .NET 3.5 SP1 and 3.0 SP2 or later.
sha...
Database development mistakes made by application developers [closed]
...using it anyway.
More here:
How important are constraints like NOT NULL and FOREIGN KEY if I’ll always control my database input with php?
Are foreign keys really necessary in a database design?
Are foreign keys really necessary in a database design?
3. Using natural rather than surrogate (te...