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Converting between strings and ArrayBuffers
...tly converting JavaScript strings to ArrayBuffers and vice-versa? Specifically, I'd like to be able to write the contents of an ArrayBuffer to localStorage and to read it back.
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Using {} in a case statement. Why?
...a = 1;
// ...
lx:
goto ly; // OK, jump implies destructor
// call for a followed by construction
// again immediately following label ly
}
Note, there are some subtleties here, you are allowed to jump past a scalar declaration that does not have an initialization, for examp...
Regular expression matching a multiline block of text
...e letters as possible until you reach a newline. This defines what I will call a textline.
((?:textline)+) means match one or more textlines but do not put each line in a group. Instead, put all the textlines in one group.
You could add a final \n in the regular expression if you want to enforce a ...
Why do function pointer definitions work with any number of ampersands '&' or asterisks '*'?
...on pointer.
Note also that you do not need to use the unary * to make the call via the function pointer; both (*p1_foo)(); and (p1_foo)(); have the same result, again because of the function-to-function-pointer conversion.
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Heroku “psql: FATAL: remaining connection slots are reserved for non-replication superuser connectio
I'm developing an app on Heroku with a Postgresql backend. Periodically, I get this error message when trying to access the database, both from the CLI and from loading a page on the server:
...
Why generate long serialVersionUID instead of a simple 1L?
...ts Serializable in Eclipse, I have two options: add default serialVersionUID(1L) or generated serialVersionUID(3567653491060394677L) . I think that first one is cooler, but many times I saw people using the second option. Is there any reason to generate long serialVersionUID ?
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What is the benefit of zerofill in MySQL?
...ILL it pads the displayed value of the field with zeros up to the display width specified in the column definition. Values longer than the display width are not truncated. Note that usage of ZEROFILL also implies UNSIGNED.
Using ZEROFILL and a display width has no effect on how the data is stored. ...
How to make the 'cut' command treat same sequental delimiters as one?
...e characters to tab. For example: I came here looking for a way to automatically export my display: who am i | tr -s ' ()' '\t' | cut -f5
– Leo
Mar 28 '16 at 23:24
...
How does a “stack overflow” occur and how do you prevent it?
...ng you pop off the stack will be 'B', and the next thing is 'A'.
When you call a function in your code, the next instruction after the function call is stored on the stack, and any storage space that might be overwritten by the function call. The function you call might use up more stack for its o...
How to detect if a function is called as constructor?
...ooking at the ECMAScript 3rd edition spec, the steps taken when new x() is called are essentially:
Create a new object
Assign its internal [[Prototype]] property to the prototype property of x
Call x as normal, passing it the new object as this
If the call to x returned an object, return it, other...