zero !== null - Technology Series - Notebook
zero !== null - Technology Series - Notebook
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Product Details
Background Info
Zero, null, who, what? What does it all mean?
Well, let's take the operator !== to begin with - this means not equal to, in a strict inequality manner. The strict part is important as it means the types of the values must match - sometimes comparing a string like "1" to a number like 1 might be what you want to do but if not then a string is not the same as a number, a strict comparison.
Zero is, well, the number zero, 0, nought... Null is nothing - think of that as an empty Excel cell.
In addition, in some languages, using a non-strict comparison (using !=) where null is involved will result in null be converted to zero. In which case zero is equal to zero. But here, as it's a strict comparison, zero is not equal to null...
Size Guide
Product measurements
Pro tip! Measure one of your products at home and compare with the measurements you see in this guide.
Measurements are provided by suppliers and may vary a small amount.
Width:
This measurement is the widest point across the product.
Height:
This measurement is from the top to the bottom of the product.
Weight:
The weight of the product.
Imperial Size Guide
| WIDTH (inches) | HEIGHT (inches) | WEIGHT (ounces) |
| 5.75 | 8 | 11.6 |
Metric Size Guide
| WIDTH (cm) | HEIGHT (cm) | WEIGHT (grams) |
| 14.61 | 20.32 | 330 |
Material & Care
Material
Unleash your creative writing, takes notes at a business conference, or simply write your shopping lists in a notebook that speaks your language. This hardcover matte notebook has a flexible binding, tear-out pages and oozes quality, making it a fabulous gift for almost anyone.
The Stats:
- Matte laminated front and back cover
- 150 pages (75 sheets): lined, cream-colored, uncoated
- Cover weight: 80 lb (118 g/m²)
- Page weight: 70 lb (104 g/m²)
- Dimensions: 5.75″ × 8″ (14.6 cm × 20.3 cm)
- Perforated pages for easy tear-out
- Casewrap binding with a flexible sewn spine
- Blank product sourced and fulfilled in the US
Shipping & Returns
ALL SALES ARE FINAL.
We can not accept returns or exchanges, so please ensure you carefully review all size guides, colors, designs, materials, care guidelines etc before placing an order. Please read our Refund/Exchange Policy here for full details.
FREE SHIPPING.
All products are shipped for free. All items are produced when an order is placed and as such delivery times can be in the region of 4-10 days. Please read our Shipping Policy here for full details.
Production Process
Digital Printing
Digital printing is pretty straightforward where the design is printed directly onto the material, which in this case is usually a paper product. This technique is used for our notebooks.