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Why are Oracle table/column/index names limited to 30 characters?
...RRM which is limited to 255 characters, and which most clients use to make errors visible. I suspect increasing the allowable size of constraint names significantly would impact the ability to report on the violations (especially where a constraint violation has been bubbled up through a few layers ...
Get records with max value for each group of grouped SQL results
...a mysql-only solution. All other databases I know will throw an SQL syntax error with the message "non aggregated columns are not listed in the group by clause" or similar. Because this solution uses undocumented behavior, the more cautious may want to include a test to assert that it remains workin...
WPF Button with Image
...
if use this button then you have this error"a value of type 'datagridtextcolumn' cannot be added to a collection or dictionary of type observablecollection" or Similar error you shoud add style …> <DataGrid.Resources> ...
Visual Studio TFS shows unchanged files in the list of pending changes
... prompt of the Developer Command Prompt (and getting a workspace not found error), before navigating to the workspace folder and executing there. If I go straight to the correct folder, the command is not found. (I wouldn't mind a solution to that issue in itself.)
...
Is there a performance difference between a for loop and a for-each loop?
...oduced in
release 1.5, gets rid of the clutter
and the opportunity for error by
hiding the iterator or index variable
completely. The resulting idiom
applies equally to collections and
arrays:
// The preferred idiom for iterating over collections and arrays
for (Element e : elements) {
...
How to configure 'git log' to show 'commit date'
...
I get a parsing error: git log --graph --pretty=format:\"%C(yellow)%h%Creset%C(cyan)%C(bold)%d%Creset %C(cyan)(%cr)%Creset %C(green)%ce%Creset %s\" bash: syntax error near unexpected token `('
– frakman1
...
What is this crazy C++11 syntax ==> struct : bar {} foo {};?
...
struct foo { virtual void f() = 0; }; // normal abstract type
foo obj;
// error: cannot declare variable 'obj' to be of abstract type 'foo'
Let's also recall that we can instantiate the UDT at the same time that we define it:
struct foo { foo() { cout << "!"; } }; // just a defini...
Integrating Dropzone.js into existing HTML form with other fields
... console.log("Successfully uploaded :" + imgName);
},
error: function (file, response) {
file.previewElement.classList.add("dz-error");
}
});
});
Note : Disabling autoDiscover, otherwise Dropzone will try to attach twice
Blog Article : Dropzone js + A...
Sequence contains more than one element
...
FYI you can also get this error if EF Migrations tries to run with no Db configured, for example in a Test Project.
Chased this for hours before I figured out that it was erroring on a query, but, not because of the query but because it was when Migr...
Is there any reason to use a synchronous XMLHttpRequest?
... other code execution (e.g., preventing back button) could possibly reduce errors/maintenance for a poorly designed system; that said, I've never seen it in the wild and stress that it should be avoided.
Libraries, like promise, feign synchronicity by chaining processes via callbacks. This suits th...