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GOTO still considered harmful? [closed]
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A good point. In higher-level languages goto doesn't really even mean anything (consider jumping between methods in Java). A Haskell function may consist of a single expression; try jumping out of that with a goto!
– Mechanical snail
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What is the use for Task.FromResult in C#
...sult(0). Hopefully the compiler is smart enough to optimize this away, and doesn't actually spawn a new thread and then kill it right away!
– John Henckel
Jan 29 '15 at 17:18
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Difference between “change” and “input” event for an `input` element
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@TimDown Does it fire synchronously?
– Suraj Jain
Aug 31 '17 at 10:21
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What's the difference between identifying and non-identifying relationships?
... It would be enough for the foreign key to be non-null to achieve this. It does not need to be part of the primary key.
So here is the real reason:
The purpose of an identifying relationship is that the foreign key can NEVER CHANGE, because it is part of the primary key... therefore identifying!!!
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Determine the type of an object?
...llections import Iterable
from numbers import Number
def bar(obj):
"""does something sensible with an iterable of numbers,
or just one number
"""
if isinstance(obj, Number): # make it a 1-tuple
obj = (obj,)
if not isinstance(obj, Iterable):
raise TypeError('obj ...
How can I output a UTF-8 CSV in PHP that Excel will read properly?
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To quote a Microsoft support engineer,
Excel for Mac does not currently support UTF-8
Update, 2017: This is true of all versions of Microsoft Excel for Mac before Office 2016. Newer versions (from Office 365) do now support UTF-8.
In order to output UTF-8 content that Excel ...
How to turn on front flash light programmatically in Android?
...the devices not having FLASH_MODE_TORCH or even if it has, then flashlight does not turn ON etc.
Typically Samsung creates a lot of problems.
You can refer to problems in the given below list:
Use camera flashlight in Android
Turn ON/OFF Camera LED/flash light in Samsung Galaxy Ace 2.2.1 &...
Eager load polymorphic
...ple tables represent the other end of the join, and SQL, as far as I know, does not allow you join a table named by the value stored in a column. By defining the extra relationship belongs_to :shop, you are giving ActiveRecord the information it needs to complete the join.
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Why do we need the “event” keyword while defining events?
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The event keyword does 3 different things:
You can define an event in an interface, even though you cannot define regular fields in interfaces.
It changes the visibility of the = and () operators (assignment and invocation) to private, so th...
IntelliJ and Tomcat…changed files are not automatically recognized by Tomcat
...he changed file(s) when IDEA's frame is deactivated (i.e. loses focus). It does take a second or two, You'll see it in the lower status bar in IDEA. Obviously. you'll still need to refresh your web browser so it fetches the new file (unless of course if the page has an auto refresh of ajax like fetc...