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What is causing “Unable to allocate memory for pool” in PHP?
...#ini.apc.ttl
The solution is to increase memory allocated to APC.
Do this by increasing apc.shm_size.
If APC is compiled to use Shared Segment Memory you will be limited by your operating system. Type this command to see your system limit for each segment :
sysctl -a | grep -E "shmall|shmmax"
T...
Haskell: Where vs. Let
I am new to Haskell and I am very confused by Where vs. Let . They both seem to provide a similar purpose. I have read a few comparisons between Where vs. Let but I am having trouble discerning when to use each. Could someone please provide some context or perhaps a few examples that demonstr...
Cancel/kill window.setTimeout() before it happens
...StatusIndicator()' is a function, you can gain performance (and type less) by simply: var timer1 = setTimeout(removeStatusIndicator, statusTimeout); This avoids the nested function calls.
– HarleyDave
Aug 29 '14 at 11:25
...
How to convert PascalCase to pascal_case?
...ing rules:
A sequence beginning with a lowercase letter must be followed by lowercase letters and digits;
A sequence beginning with an uppercase letter can be followed by either:
one or more uppercase letters and digits (followed by either the end of the string or an uppercase letter followed by...
How do I check for a network connection?
... fine, however, there are certain cases when the standard method is fooled by virtual cards (virtual box, ...). It's also often desirable to discard some network interfaces based on their speed (serial ports, modems, ...).
Here is a piece of code that checks for these cases:
/// <summary>...
Renaming table in rails
...d::ConnectionAdapters::SchemaStatements isn't even a class (as pointed out by cam), which means that you can't even create an instance of it as per what I said above. And even if you used cam's example of class Foo; include ActiveRecord::ConnectionAdapters::SchemaStatements; def bar; rename_table; e...
How to obtain the start time and end time of a day?
...ut you can call toInstant if you need such objects which are always in UTC by definition.
Instant start = odtStart.toInstant() ;
Instant stop = odtStop.toInstant() ;
start.toString() = 2020-01-29T06:00:00Z
stop.toString() = 2020-01-30T06:00:00Z
Tip: You may be interested in adding the ThreeTen-...
Understanding offsetWidth, clientWidth, scrollWidth and -Height, respectively
...Height: The size of the visual box incuding all borders. Can be calculated by adding width/height and paddings and borders, if the element has display: block
clientWidth, clientHeight: The visual portion of the box content, not including borders or scroll bars , but includes padding . Can not be cal...
Empty arrays seem to equal true and false at the same time
...
that's by convention, in JS if objects are coerced to Boolean, they are always coerced to TRUE. look at the "Boolean context" table at: javascript.info/tutorial/object-conversion
– Niki
Jun 7 '...
Generating random strings with T-SQL
...nced the random seed. I updated the code, and also fixed the mentioned off-by-one issue.
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