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Assign pandas dataframe column dtypes
I want to set the dtype s of multiple columns in pd.Dataframe (I have a file that I've had to manually parse into a list of lists, as the file was not amenable for pd.read_csv )
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When should I use a table variable vs temporary table in sql server?
...RY KEY constraint. SQL Server 2014 introduced inline index syntax for a subset of the options available in CREATE INDEX. This has been extended since to allow filtered index conditions. Indexes with INCLUDE-d columns or columnstore indexes are still not possible to create on table variables however....
Java - JPA - @Version annotation
...ented and added to the WHERE clause, something like this:
UPDATE MYENTITY SET ..., VERSION = VERSION + 1 WHERE ((ID = ?) AND (VERSION = ?))
If the WHERE clause fails to match a record (because the same entity has already been updated by another thread), then the persistence provider will throw an...
How can I make my own event in C#?
... get
{
return i;
}
set
{
if(value <= Maximum)
{
i = value;
}
else
{
//To make sure we only trigger the event ...
How do you clear a slice in Go?
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@ChrisWeber: just iterate over the underlying array and set all the elements to a new value
– newacct
Jun 7 '13 at 14:02
2
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Swift variable decorations with “?” (question mark) and “!” (exclamation mark)
I understand that in Swift all variables must be set with a value, and that by using optionals we can set a variable to be set to nil initially.
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Can bash show a function's definition?
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Works with old shells on non-linux systems if you use typeset -f
– Emmanuel
Dec 2 '17 at 19:38
good a...
How do I copy directories recursively with gulp?
... May you edit the answer to provide an example for the original set of files? I am unsure how this is more appropriate but I'd be happy to look at how it works compared to the {base:"."} method.
– M1ke
Mar 26 '15 at 10:08
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How to send POST request in JSON using HTTPClient in Android?
...r/entity
StringEntity se = new StringEntity(holder.toString());
//sets the post request as the resulting string
httpost.setEntity(se);
//sets a request header so the page receving the request
//will know what to do with it
httpost.setHeader("Accept", "application/json");
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How to use WinForms progress bar?
... Nice example, but there's a small error in your code. You need to set the backgroundWorker.WorkerReportsProgress to true. Check my edit
– Mana
May 9 '17 at 8:02
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