大约有 40,000 项符合查询结果（耗时：0.0493秒） [XML]
How do I get the first element from an IEnumerable in .net?
...IEnumberable<string> aa;
string a = (from t in aa where t.Equals("") select t.Value).ToArray()[0];
share
|
improve this answer
|
follow
|
...
Use PPK file in Mac Terminal to connect to remote connection over SSH [closed]
...isting private key file using the Load button. From the "Conversions" menu select "Export OpenSSH key" and save the private key file with the .pem file extension.
Copy the PEM file to your Mac and set it to be read-only by your user:
chmod 400 <private-key-filename>.pem
Then you should be ...
Convert number to month name in PHP
...mes from the beginning of the year to the end e.g. to populate a drop-down select, I would just use the following;
for ($i = 0; $i < 12; ++$i) {
$months[$m] = $m = date("F", strtotime("January +$i months"));
}
share
...
JPA EntityManager: Why use persist() over merge()?
...
I noticed that when I used em.merge, I got a SELECT statement for every INSERT, even when there was no field that JPA was generating for me--the primary key field was a UUID that I set myself. I switched to em.persist(myEntityObject) and got just INSERT statements then...
Copy object values in Visual Studio debug mode
...
You can add a watch for that object, and in the watch window, expand and select everything you want to copy and then copy it.
share
|
improve this answer
|
follow
...
How to make good reproducible pandas examples
...e a bit with np.random.choice. For example, in column g, we have a random selection of 6 dates from 2011. Additionally, by setting replace=False we can assure these dates are unique -- very handy if we want to use this as an index with unique values.
Fake stock market data
In addition to taking...
Convert NaN to 0 in javascript
...
Thanks mate, have selected and modified a bit this for myself a = a*1 || 0
– Somebody
Dec 7 '11 at 17:22
...
How can I make an “are you sure” prompt in a Windows batchfile?
... and back for me. Only thing is as much as it helps me I keep accidentally selecting that command off my command buffer and mass overwriting uncommited changes.
...
Error : The service is invalid
...
Agree with the above comment. Please select the answer given as the correct one.
– memmons
Nov 12 '12 at 22:20
...
Eclipse count lines of code
...e way to count lines of code in Eclipse:
using the Search / File... menu, select File Search tab, specify \n[\s]* for Containing text (this will not count empty lines), and tick Regular expression.
Hat tip: www.monblocnotes.com/node/2030
...