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Pure virtual function with implementation
...classes to always perform their own work but also be able to call a common set of functionality.
Note that even though it's permitted by the language, it's not something that I see commonly used (and the fact that it can be done seems to surprise most C++ programmers, even experienced ones).
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Why does scanf() need “%lf” for doubles, when printf() is okay with just “%f”?
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How can I format a decimal to always show 2 decimal places?
... method rounds to a fixed number of decimal places. If the Inexact trap is set, it is also useful for validation:
>>> TWOPLACES = Decimal(10) ** -2 # same as Decimal('0.01')
>>> # Round to two places
>>> Decimal('3.214').quantize(TWOPLACES)
Decimal('3.21')
>>&...
Downloading a Google font and setting up an offline site that uses it
...e content type while linking from a local file Content-type: text/css; charset: UTF-8
– Clain Dsilva
Sep 12 '17 at 3:32
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Eclipse hangs on loading workbench
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DISCLAIMER: THIS WILL DELETE ALL OF YOUR ECLIPSE WORKSPACE SETTINGS AND YOU WILL HAVE TO RE-IMPORT ALL YOUR PROJECTS, THERE ARE LESS DESTRUCTIVE ANSWERS HERE
Try the following:
Delete the .metadata folder in your local workspace (this is what worked for me). It seems that it conta...
What does the Reflect object do in JavaScript?
...re
}
Other methods that return such a boolean success status are Reflect.set (to update a property), Reflect.deleteProperty (to delete a property), Reflect.preventExtensions (to make an object non-extensible) and Reflect.setPrototypeOf (to update an object's prototype link).
First-class operation...
Convert number to month name in PHP
...ateObj->format('F'); // March
The ! formatting character is used to reset everything to the Unix epoch. The m format character is the numeric representation of a month, with leading zeroes.
Alternative solution:
If you're using an older PHP version and can't upgrade at the moment, you could ...
How to convert an Int to a String of a given length with leading zeros to align?
...dTo(7, '0').reverse
Long answer:
Scala StringOps (which contains a nice set of methods that Scala string objects have because of implicit conversions) has a padTo method, which appends a certain amount of characters to your string. For example:
"aloha".padTo(10,'a')
Will return "alohaaaaaa". N...
How can I convince IE to simply display application/json rather than offer to download it?
...d to borrow my box and he ran this fix. Does anyone know what the original settings are so that I might reverse them?
– KevDog
Jan 1 '13 at 1:29
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Import multiple csv files into pandas and concatenate into one DataFrame
...en/latest/examples/dataframe-csv.html)
The Dask dataframes implement a subset of the Pandas dataframe API. If all the data fits into memory, you can call df.compute() to convert the dataframe into a Pandas dataframe.
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