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Expression Versus Statement
...abeled_statement
| compound_statement
| expression_statement
| selection_statement
| iteration_statement
| jump_statement
;
expression_statement
: ';'
| expression ';'
;
http://www.lysator.liu.se/c/ANSI-C-grammar-y.html
...
Copy values from one column to another in the same table
... set str = '';
WHILE x < 5 DO
set str = (select source_col from emp where id=x);
update emp set target_col =str where id=x;
SET x = x + 1;
END WHILE;
END$$
DELIMITER ;
...
Prevent users from submitting a form by hitting Enter
...area>.
<input ... onkeydown="return event.key != 'Enter';">
<select ... onkeydown="return event.key != 'Enter';">
...
To reduce boilerplate, this is better to be done with jQuery:
$(document).on("keydown", ":input:not(textarea)", function(event) {
return event.key != "Enter";...
XmlSerializer giving FileNotFoundException at constructor
...ouldn't have even considered using FromTypes() since you can just do types.Select(t => new XmlSerializer(t)).
– Allon Guralnek
Jan 25 '13 at 23:14
2
...
How can I determine the type of an HTML element in JavaScript?
...eof HTMLInputElement) {} // <input>
elseif (e instanceof HTMLSelectElement) {} // <select>
elseif (e instanceof HTMLTextAreaElement) {} // <textarea>
elseif ( ... ) {} // any interface
Look here for a complete list of interfaces.
...
What uses are there for “placement new”?
..._b, ...);
Now you can cluster objects together in a single memory arena, select an allocator which is very fast but does no deallocation, use memory mapping, and any other semantic you wish to impose by choosing the pool and passing it as an argument to an object's placement new operator.
...
#ifdef replacement in the Swift language
...what I wanted by using custom Build Configurations:
Go to your project / select your target / Build Settings / search for Custom Flags
For your chosen target set your custom flag using -D prefix (without white spaces), for both Debug and Release
Do above steps for every target you have
Here's ...
Visual Studio jump to next error shortcut?
... Important: at least for VS 2017, I needed to in my "error view" have selected both "Build + Intellisense" in order for these shortcuts to work.
– Johan S
Feb 22 '18 at 10:23
...
How to recover a dropped stash in Git?
...t/ {print $3}'
...or using Powershell for Windows:
git fsck --no-reflog | select-string 'dangling commit' | foreach { $_.ToString().Split(" ")[2] }
This will show you all the commits at the tips of your commit graph which are no longer referenced from any branch or tag – every lost commit, inclu...
Can anybody find the TFS “Unshelve” option in Visual Studio 2012?
...ck on the menu "Tools > Customize". This opens the "Customize" dialog.
Select the "Commands" tab.
Choose the "Context menu" radio button in the "Choose a menu or toolbar to rearrange" section.
Choose "Project and Solution Context Menus | Solution | Source Control" from the drop down.
Click the "...