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optional local variables in rails partial templates: how do I get out of the (defined? foo) mess?
...imization is the following, so that you only have to call this once at the top of your template, instead of using the 'fetch guard' on every use of the variable. foo ||= local_assigns[:foo] = local_assigns.fetch(:foo, default_value)
– sethcall
Mar 30 '14 at 18...
CoffeeScript on Windows?
...ther 31 people please come and vote for this answer - it deserves to be on top...
– Billy Moon
Aug 20 '15 at 19:12
@Bi...
How can I use Async with ForEach?
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This has the advantage that on top of awaiting each element, you are now also awaiting the MoveNext of the enumerator. This is important in cases where the enumerator cannot fetch the next element instantly, and must wait for one to become available.
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Set padding for UITextField with UITextBorderStyleNone
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I created this category implementation and added it to the top of the .m file.
@implementation UITextField (custom)
- (CGRect)textRectForBounds:(CGRect)bounds {
return CGRectMake(bounds.origin.x + 10, bounds.origin.y + 8,
bounds.size.width - 20...
AWS MySQL RDS vs AWS DynamoDB [closed]
...using DynamoDB for specific tasks may make sense, building a new system on top of DynamoDB is really a bad idea. Best laid plans etc., you always need that extra flexibility from your DB.
Here are our reasons we moved from DynamoDB:
Indexing - Changing or adding keys on-the-fly is impossible wi...
Eclipse syntax highlighting preferences save and restore
...tadata.plugins\org.eclipse.core.runtime.settings\
Copy and paste over the top of the one in your new eclipse instance. This worked for me when moving from 3.4 to 3.5
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Finding duplicate values in MySQL
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Extremely helpful answer, this should be top so more people see it. I remember how much pain I went through creating such lists, and it was available all the time as command ..
– John
May 23 '18 at 15:45
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Can an abstract class have a constructor?
... the constructors in the corresponding inheritance tree are invoked in the top to bottom approach. The same case applies to abstract classes. Though we cannot create an object of an abstract class, when we create an object of a class which is concrete and subclass of the abstract class, the construc...
How to remove all whitespace from a string?
...ions (though as of Dec 2014, the development version has a branch built on top of stringi, mentioned below). The equivalents of the above commands, using [str_replace_all][3], are:
library(stringr)
str_replace_all(x, fixed(" "), "")
str_replace_all(x, space(), "")
stringr also has a str_trim fun...
How to vertically align text inside a flexbox?
...er is set to align-items: stretch. However, one item must be pinned to the top, so it is set to align-self: flex-start.
example
How is the text a flex item?
Some people may be wondering how a run of text...
<li>This is the text</li>
is a child element of the li.
The reason is th...