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MySQL query to get column names?
...a virtual database. Specifically the INFORMATION_SCHEMA.COLUMNS table...
SELECT `COLUMN_NAME`
FROM `INFORMATION_SCHEMA`.`COLUMNS`
WHERE `TABLE_SCHEMA`='yourdatabasename'
AND `TABLE_NAME`='yourtablename';
It's VERY powerful, and can give you TONS of information without need to parse text (...
System.IO.Packaging
...4.0:
In your project's Solution Explorer, right-click on References and select Add References from the context menu.
Select Assemblies in the left-hand pane, then click the Browse button next to the File name field near the botton of the pane.
Browse to .NET 4.0 reference assemblies and select Wi...
When should I use File.separator and when File.pathSeparator?
...e help of some code
separator: Platform dependent default name-separator character as String. For windows, it’s ‘\’ and for unix it’s ‘/’
separatorChar: Same as separator but it’s char
pathSeparator: Platform dependent variable for path-separator. For
example PATH or CLASSPATH variab...
How do I use IValidatableObject?
...ustom model binder):
var resultsGroupedByMembers = validationResults
.SelectMany(vr => vr.MemberNames
.Select(mn => new { MemberName = mn ?? "",
Error = vr.ErrorMessage }))
.GroupBy(x => x.MemberName);
foreach (v...
How to make rounded percentages add up to 100%
...original,
decimal forceSum, int decimals)
{
var rounded = original.Select(x => Math.Round(x, decimals)).ToList();
Debug.Assert(Math.Round(forceSum, decimals) == forceSum);
var delta = forceSum - rounded.Sum();
if (delta == 0) return rounded;
var deltaUnit = Convert.ToDecim...
How to pass an array within a query string?
...)
Form Examples
On a form, multi-valued fields could take the form of a select box set to multiple:
<form>
<select multiple="multiple" name="cars[]">
<option>Volvo</option>
<option>Saab</option>
<option>Mercedes</option...
Can I find events bound on an element with jQuery?
... I'm attempting your solution but still getting undefined returned for the selector. I used $('#elem').bind('click', function() {}); if that would make a difference.
– Marcus
Oct 19 '12 at 2:13
...
How do I expand a tuple into variadic template function's arguments?
...me U> void my_func(T &&t, U &&u) {}
int main(int argc, char *argv[argc]) {
std::tuple<int, float> my_tuple;
std::apply([](auto &&... args) { my_func(args...); }, my_tuple);
return 0;
}
This work around is a simplified solution to the general problem of pa...
Looping over arrays, printing both index and value
...="snoopy"
bar[bar]="nice"
bar[baz]="cool"
Issue with newlines or special chars
Unfortunely, there is at least one condition making this not work anymore: when variable do contain newline:
foo[17]=$'There is one\nnewline'
Command paste will merge line-by-line, so output will become wrong:
past...
What's the best way to build a string of delimited items in Java?
...lar to the one you refer to in Ruby:
StringUtils.join(java.lang.Iterable,char)
Java 8:
Java 8 provides joining out of the box via StringJoiner and String.join(). The snippets below show how you can use them:
StringJoiner
StringJoiner joiner = new StringJoiner(",");
joiner.add("01").add("02")...