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JavaScript arrays braces vs brackets
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137
The first and third are equivalent and create a new array. The second creates a new empty objec...
Get value from JToken that may not exist (best practices)
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svicksvick
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How to use a different version of python during NPM install?
I have terminal access to a VPS running centos 5.9 and default python 2.4.3 installed. I also installed python 2.7.3 via these commands: (I used make altinstall instead of make install )
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Difference between len() and .__len__()?
Is there any difference between calling len([1,2,3]) or [1,2,3].__len__() ?
4 Answers
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What is NSZombie?
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193
It's a memory debugging aid. Specifically, when you set NSZombieEnabled then whenever an object ...
Difference between var_dump,var_export & print_r
...(4) {
[0]=> string(0) ""
[1]=> bool(false)
[2]=> int(42)
[3]=> array(1) {[0]=>string(2) "42")}
}
print_r is for debugging purposes, too, but does not include the member's type. It's a good idea to use if you know the types of elements in your array, but can be misleading oth...
What are “res” and “req” parameters in Express functions?
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3 Answers
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Grep for literal strings
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138
You can use grep for that, with the -F option.
-F, --fixed-strings PATTERN is a set of n...
What is the difference between related SQLite data-types like INT, INTEGER, SMALLINT and TINYINT?
When creating a table in SQLite3, I get confused when confronted with all the possible datatypes which imply similar contents, so could anyone tell me the difference between the following data-types?
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