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Is SQL syntax case sensitive?
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The SQL Keywords are case-insensitive (SELECT, FROM, WHERE, etc), but are often written in all caps. However in some setups table and column names are case-sensitive. MySQL has a configuration option to enable/disable it. Usually case-sensitive table and column na...
How to insert an element after another element in JavaScript without using a library?
... than the insertBefore (break even if the existing node variable name is 3 chars long)
Downsides:
lower browser support since newer: https://caniuse.com/#feat=insert-adjacent
will lose properties of the element such as events because outerHTML converts the element to a string. We need it because...
Hidden Features of Xcode
...m working with a large or unfamiliar project.
To show the Favorites Bar, select the following menu option:
View > Layout > Show Favorites Bar
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edited Apr 4 '11...
How to convert std::string to LPCWSTR in C++ (Unicode)
... int len;
int slength = (int)s.length() + 1;
len = MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, 0, 0);
wchar_t* buf = new wchar_t[len];
MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, buf, len);
std::wstring r(buf);
delete[] buf;
return r;
}
std::wstring stemp...
Left align two graph edges (ggplot)
...we have two columns? gA$heights[2:3] does not seem to work. Do I have to select another element of the grob than 2:3? Thank you!
– Etienne Low-Décarie
Jun 28 '13 at 16:23
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How to change an Eclipse default project into a Java project
.... Taking a backup is very recommended!
How to do it just using Eclipse?
Select project.
Open the project properties through Project -> Properties.
Go to "Targetted Runtimes" and add the proper runtime. Click APPLY.
Go to "Project Facets" and select the JAVA facet which has appeared due to step...
jQuery count child elements
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You can use .length with just a descendant selector, like this:
var count = $("#selected li").length;
If you have to use .children(), then it's like this:
var count = $("#selected ul").children().length;
You can test both versions here.
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Is there a way to access the “previous row” value in a SELECT statement?
...d to order by some column for this to be meaningful. Something like this:
select t1.value - t2.value from table t1, table t2
where t1.primaryKey = t2.primaryKey - 1
If you know how to order things but not how to get the previous value given the current one (EG, you want to order alphabetically) ...
Printing the value of a variable in SQL Developer
...utput).
Press the "+" button at the top of the Dbms Output window and then select an open database connection in the dialog that opens.
In SQL*Plus:
SET SERVEROUTPUT ON
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Programmatically fire button click event?
...[btn sendActionsForControlEvents:UIControlEventTouchUpInside];
[btn performSelector:@selector(setHighlighted:) withObject:NO afterDelay:0.25];
This will programmatically hit the button and highlight it for a seemingly normal amount of time. Richie's suggestion didn't work as the button was only h...