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How to export DataTable to Excel
...te(",");
}
}
sw.Write(sw.NewLine);
// Now write all the rows.
foreach (DataRow dr in dt.Rows)
{
for (int i = 0; i < iColCount; i++)
{
if (!Convert.IsDBNull(dr[i]))
{
s...
How to convert an array into an object using stdClass() [duplicate]
...Vasile', 'prenume' => 'Mihai', 'sex' => 'm', 'varsta' => 25)
);
If you want to see is this stdClass object just call this
print_r($clasa);
If you want to convert an array to object code will be
$arr = array('a'=>'apple','b'=>'ball');
$arr = (object) $arr;
You don't need to us...
How do you print in a Go test using the “testing” package?
...output after a certain amount of time (e.g., 10 minutes in CircleCI).
So now my tests are killed and I have nothing in the logs to tell me what happened.
But for (possibly) Go 1.14 (Q1 2020): CL 127120
testing: stream log output in verbose mode
The output now is:
=== RUN TestFoo
=== ...
When is assembly faster than C?
...(float only has 23 bit and it's harder to predict precision loss). i.e. uniform absolute precision over the entire range, instead of close-to-uniform relative precision (float).
Modern compilers optimize this fixed-point example nicely, so for more modern examples that still need compiler-specif...
fork() branches more than expected?
...t fork() creates a near-perfect copy of the current process. The most significant difference (for most purposes) is that fork()'s return value differs between parent and child. (Since this code ignores the return value, it makes no difference.)
So, at first, there is one process. That creates a ...
What's the scope of a variable initialized in an if statement?
... function, class, or module in which they're assigned. Control blocks like if and while blocks don't count, so a variable assigned inside an if is still scoped to a function, class, or module.
(Implicit functions defined by a generator expression or list/set/dict comprehension do count, as do lambd...
What is the JSF resource library for and how should it be used?
...ike Mojarra and MyFaces and JSF component libraries like PrimeFaces and OmniFaces use it. No one of them use resource libraries this way. They use it (under the covers, by @ResourceDependency or UIViewRoot#addComponentResource()) the following way:
<h:outputScript library="javax.faces" name="jsf...
How do I find a “gap” in running counter with SQL?
...rt into artificial_range( name ) select name from artificial_range;
-- you now have two rows
insert into artificial_range( name ) select name from artificial_range;
-- you now have four rows
insert into artificial_range( name ) select name from artificial_range;
-- you now have eight rows
--etc.
...
How can I print the contents of a hash in Perl?
...rator in C and C++. The reason it matters in this context is that in Perl, if you call a function with a hash value as the argument, that hash value gets listified and expanded into multiple arguments - so %hsh=("a" => 1, "b" => 2); foo(%hsh); would be equivalent to foo("a", 1, "b", 2). If you...
Registry Key '…' has value '1.7', but '1.6' is required. Java 1.7 is Installed and the Registry is P
...version and uninstalled the one we were using. Don't ask me why, I don't know. I re-installed Java 1.7 and uninstalled 1.6 along with the JREs.
...