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Using braces with dynamic variable names in PHP
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from phpNET manual php.net/manual/ru/language.variables.variable.php $price_for_monday = 10; $price_for_tuesday = 20; $today = 'tuesday'; $price_for_today = ${ 'price_for_' . $today}; echo $price_for_today; // will return 2...
How to change past commit to include a missed file?
...to the change set. After other commits, I realized the file is now missing from a HEAD^4 commit.
4 Answers
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How do I move the turtle in LOGO? [closed]
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NODRAW [ND] - Enter text mode with clear screen
NOWRAP - Prevent drawings from wrapping around screen
PENCOLOR [PC] - Change pen color
PENDOWN [PD] - Turtle leaves trail
PENUP [PU] - Turtle ceases to leave trail
RIGHT ## [RT] - Turn turtle right
SETHEADING [SETH] - Set turtle heading, e.g. SETH 180...
What is the difference between save and insert in Mongo DB?
...orms an update, replacing all field in the existing record with the fields from the document.
Save vs Update :
update modifies an existing document matched with your query params. If there is no such matching document, that's when upsert comes in picture.
upsert : false : Nothing happens when no ...
Where can I find my .emacs file for Emacs running on Windows?
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Copy and pasted from the Emacs FAQ, http://www.gnu.org/software/emacs/windows/:
Where do I put my init file?
On Windows, the .emacs file may be called _emacs for backward compatibility with DOS and FAT filesystems where filenames could not...
Rails 3.1: Engine vs. Mountable App
...ull Engine
With a full engine, the parent application inherits the routes from the engine. It is not necessary to specify anything in parent_app/config/routes.rb. Specifying the gem in Gemfile is enough for the parent app to inherit the models, routes etc. The engine routes are specified as:
#...
CSV API for Java [closed]
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The package I downloaded from SourceForge had a binary in the deploy folder.
– Mike Sickler
Jun 1 '11 at 2:29
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Breakpoint on property change
...a Fiddler if you can't edit the source manually); sadly, functions defined from Firebug don't seem to break on debugger (or is it a matter of configuration? please correct me then), but console.log works.
Edit:
Note that in Firefox, console.watch already exists, due to Firefox's non-standard Obje...
How can I clear or empty a StringBuilder? [duplicate]
...ngth to zero. The remaining allocations are still there. This answer stems from the javascript length = 0 for arrays, which performs a magical operation to mark the array reusable, but even there i am not sure, and don't trust it. The underlying array will never be garbage collected.
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How to delete a folder with files using Java
...elf. Symlinks are just an example of things you'll miss writing everything from scratch.
– 9ilsdx 9rvj 0lo
Mar 22 '18 at 7:31
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