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Is there a regular expression to detect a valid regular expression?
...t;)|\)(?<-N>))(?:(?:[?+*]|\{\d+(?:,\d*)?\})[?+]?)?|\|)*$(?(N)(?!))
From the comments:
Will this validate substitutions and translations?
It will validate just the regex part of substitutions and translations. s/<this part>/.../
It is not theoretically possible to match all va...
EF Code First foreign key without navigation property
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The simplification comes from the automation: I don't have access to other environments to which my code is deployed. Being able to perform these changes in code is nice for me. But I like the snark :)
– pomeroy
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Insert current date in datetime format mySQL
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If you Pass date from PHP you can use any format using STR_TO_DATE() mysql function .
Let conseder you are inserting date via html form
$Tdate = "'".$_POST["Tdate"]."'" ; // 10/04/2016
$Tdate = "STR_TO_DATE(".$Tdate.", '%d/%m/%Y')" ; ...
How to check if a variable is set in Bash?
...ink to the POSIX standard, which references the chapter the table is taken from. One construct I use in almost any script I write is : ${FOOBAR:=/etc/foobar.conf} to set a default value for a variable if it is unset or null.
– Jens
Mar 10 '15 at 11:08
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Are PHP Variables passed by value or by reference?
...t examples and exactly what I thought would happen. I'm a newcomer to PHP (from Javascript / node.js background) and sometimes it's hard to grok what's going on, but this is very clear!
– TKoL
May 13 '19 at 10:26
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Why does Git treat this text file as a binary file?
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We are both right, but from different perspectives. We both say "Git inspects the contents to determine its type." We both say that to make git know it should be treated as UTF16 the user needs to tell git via .gitattributes etc.
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Change font size of UISegmentedControl
... forState: UIControlState.Normal)
Thanks to the Swift implementations from @audrey-gordeev
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Android Layout with ListView and Buttons
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The solution to keeping the ListView above the buttons, but preventing it from covering them up when the list is long, is to set android:layout_weight="1.0" on the ListView. Leave the layout_weight on the buttons unset so that they remain at their natural size, otherwise the buttons will get scaled...
Is it bad practice to make a setter return “this”?
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well, generally you don't return anything from a setter anyway, by convention.
– Ken Liu
Aug 28 '09 at 4:39
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How do I escape a single quote?
...7hel%27lo%27" which can be used in the attribute.
again to read the value from the attr
var unescapedData = unescape("%27hel%27lo%27")
output = "'hel'lo'"
This will be helpful if you have huge json stringify data to be used in the attribute
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