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How do I check if a string is a number (float)?
...nversion function has two kinds of results
A number, if the number is valid
A status code (e.g., via errno) or exception to show that no valid number could be parsed.
C (as an example) hacks around this a number of ways. Python lays it out clearly and explicitly.
I think your code for doing th...
Cannot pass null argument when using type hinting
...her languages null has the ability to be of any type thus making null a valid argument in this case. 2: Php is using a default value for an argument to specify that null is allowable, this is obscure and it makes a mandatory parameter impossible even if the developer wants to force a null to be expl...
How do I detach objects in Entity Framework Code First?
... it after answering this question so you should mark @Slauma's one as a valid answer.
– Ladislav Mrnka
Apr 16 '11 at 20:36
1
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Python Matplotlib Y-Axis ticks on Right Side of Plot
...imple line plot and need to move the y-axis ticks from the (default) left side of the plot to the right side. Any thoughts on how to do this?
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What is the list of valid @SuppressWarnings warning names in Java?
What is the list of valid @SuppressWarnings warning names in Java?
9 Answers
9
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argparse store false if unspecified
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I didn't understand the contrarian naming convention.
– brainLoop
Jul 16 '19 at 9:04
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Escape double quotes in a string
...iterals as you have, or escape the " using backslash.
string test = "He said to me, \"Hello World\" . How are you?";
The string has not changed in either case - there is a single escaped " in it. This is just a way to tell C# that the character is part of the string and not a string terminator.
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How to open a web server port on EC2 instance
...rt 3000, is there an "Apply" button somewhere?
– Noitidart
Aug 30 '18 at 20:00
1
@Noitidart Save ...
How can I capture the result of var_dump to a string?
... var_export
You may want to check out var_export — while it doesn't provide the same output as var_dump it does provide a second $return parameter which will cause it to return its output rather than print it:
$debug = var_export($my_var, true);
Why?
I prefer this one-liner to using ob_start ...
HttpListener Access Denied
...ason not to use it - yet this isn't documented.
– David Ford
Aug 8 '16 at 10:13
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