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Detecting an undefined object property
... foo.bar === 'undefined') {
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}
is always exactly equivalent to this³:
if (foo.bar === undefined) {
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}
and taking into account the advice above, to avoid confusing readers as to why you’re using typeof, because it makes the most sense to use === to check for equality, because it co...
Is the LIKE operator case-sensitive with MSSQL Server?
In the documentation about the LIKE operator , nothing is told about the case-sensitivity of it. Is it? How to enable/disable it?
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Git: list only “untracked” files (also, custom commands)
...ted May 4 '19 at 21:36
Jean-François Fabre♦
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answered Dec 14 '11 at 14:31
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What is the claims in ASP .NET Identity
... corrected before final reports are submitted, because you don't want to overpay or underpay your employees. You can use a Role-Based approach for the Manager and Technician by creating a Manager Role and Technician Role. But the Manager Role is the one with the ability to access and edit the clocki...
HTML5 Canvas vs. SVG vs. div
What is the best approach for creating elements on the fly and being able to move them around? For example, let's say I want to create a rectangle, circle and polygon and then select those objects and move them around.
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The most efficient way to implement an integer based power function pow(int, int)
...tion chain for a¹⁵ above, the subproblem for a⁶ must be computed as (a³)² since a³ is re-used (as opposed to, say, a⁶ = a²(a²)², which also requires three multiplies).
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What is normalized UTF-8 all about?
The ICU project (which also now has a PHP library ) contains the classes needed to help normalize UTF-8 strings to make it easier to compare values when searching.
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Difference between Big-O and Little-O Notation
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x² ∈ O(200 * x²)
The following are true for little-o:
x² ∈ o(x³)
x² ∈ o(x!)
ln(x) ∈ o(x)
Note that if f ∈ o(g), this implies f ∈ O(g). e.g. x² ∈ o(x³) so it is also true that x² ∈ O(x³), (again, think of O as <= and o as <)
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What is a plain English explanation of “Big O” notation?
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N² → (2N)² = 4(N²)
... I double-cubed (octuple) the time an O(N³) ("cubic time") algorithm takes." (e.g. a problem 100x as big takes 100³=1000000x as long... very unsustainable)
cN³ → c(2N)³ = 8(cN³)
... I add a fixed amount to the time an O(log(N)) ("logarithmic time") al...
How do I get user IP address in django?
... answered May 12 '11 at 9:38
SævarSævar
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