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Using braces with dynamic variable names in PHP
...t $variableName between {} :
${$variableName} = $value;
Using {} is only mandatory when the name of your variable is itself a composition of multiple values, like this :
${$variableNamePart1 . $variableNamePart2} = $value;
It is nevertheless recommended to always use {}, because it's more readable...
Is it not possible to stringify an Error using JSON.stringify?
...toJSON() may not be defined for Errors specifically, the method is still standardized for objects in general (ref: step 3). So, the risk of collisions or conflicts is minimal.
Though, to still avoid it completely, JSON.stringify()'s replacer parameter can be used instead:
function replaceErrors(ke...
How to install a specific JDK on Mac OS X?
...t I'm a bit surprised to only see downloadable versions for Linux, Windows and Solaris ...
16 Answers
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How to check if one DateTime is greater than the other in C#
I have two DateTime objects: StartDate and EndDate . I want to make sure StartDate is before EndDate . How is this done in C#?
...
How to list only the file names that changed between two commits?
...ly HEAD~10 HEAD~5
to see the differences between the tenth latest commit and the fifth latest (or so).
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“Could not find bundler” error
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if you create a new applocation - rails new and if you get this error?
– AMIC MING
Mar 19 '13 at 0:35
2
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How to add 30 minutes to a JavaScript Date object?
...(date, minutes) {
return new Date(date.getTime() + minutes*60000);
}
And just in case this is not obvious, the reason we multiply minutes by 60000 is to convert minutes to milliseconds.
Be Careful with Vanilla Javascript. Dates Are Hard!
You may think you can add 24 hours to a date to get to...
Git push won't do anything (everything up-to-date)
...gin develop
That will: create a new branch on the remote called develop; and bring that branch up to date with your local develop branch; and set develop to push to origin/develop so that in future, git push without arguments will push develop automatically.
If you want to push your local develop...
Number.sign() in javascript
...its absolute value also gives its sign. Using the short-circuiting logical AND operator allows us to special-case 0 so we don't end up dividing by it:
var sign = number && number / Math.abs(number);
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bundle install returns “Could not locate Gemfile”
I'm new to Rails and am currently working through a guide.
The guide states:
9 Answers
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