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How do I negate a condition in PowerShell?
...ot the most readable/understandable method.
if ((test-path C:\code) -bxor 1) {write "it doesn't exist!"}
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How to add 2 buttons into the UINavigationbar on the right side without IB?
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Should I use single or double colon notation for pseudo-elements?
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Do not use both combined with a comma. A CSS 2.1 compliant (not CSS3 capable) user agent will ig...
Using isKindOfClass with Swift
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answered Jun 14 '14 at 13:29
KPMKPM
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MongoDB aggregation framework match OR
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$match: { $or: [{ author: 'dave' }, { author: 'john' }] }
Like so, since the $match operator...
How to round a number to n decimal places in Java
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Rails 3 check if attribute changed
...umentation is really good, but it lets you do things such as:
@user.street1_changed? # => true/false
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Django CharField vs TextField
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answered Sep 8 '11 at 21:23
Cat Plus PlusCat Plus Plus
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Git - Ignore files during merge
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edited Sep 14 '18 at 16:13
Sergey Brunov
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How to check if field is null or empty in MySQL?
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194
Either use
SELECT IF(field1 IS NULL or field1 = '', 'empty', field1) as field1
from tablenam...