大约有 32,000 项符合查询结果（耗时：0.0549秒） [XML]
Return empty cell from formula in Excel
...
You're going to have to use VBA, then. You'll iterate over the cells in your range, test the condition, and delete the contents if they match.
Something like:
For Each cell in SomeRange
If (cell.value = SomeTest) Then cell.ClearContents
Next
...
Can't start hostednetwork
...go to Device Manager (Windows-key + x + m on windows 8, Windows-key + x then m on windows 10), then open the network adapters tree , right click button on Microsoft Hosted Network Virtual Adapter and click on enable.
Try now with the command netsh wlan start hostednetwork with admin privileges....
How to remove application from app listings on Android Developer Console
Is there any way to unpublish and then permanently remove an application from the list of applications on Android Developer Console?
...
If strings are immutable in .NET, then why does Substring take O(n) time?
...ring operations people typically did on strings were completely different, then it would make sense to go with a persistent approach. If people typically had million-character strings, and were extracting thousands of overlapping substrings with sizes in the hundred-thousand-character range, and tho...
Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]
...more powerful [[ as far as Bash is concerned.
Usual cases
if [[ $var ]]; then # var is set and it is not empty
if [[ ! $var ]]; then # var is not set or it is set to an empty string
The above two constructs look clean and readable. They should suffice in most cases.
Note that we don't need to...
Run a Java Application as a Service on Linux
... echo "Starting $SERVICE_NAME ..."
if [ ! -f $PID_PATH_NAME ]; then
nohup java -jar $PATH_TO_JAR /tmp 2>> /dev/null >> /dev/null &
echo $! > $PID_PATH_NAME
echo "$SERVICE_NAME started ..."
else
echo "$SERVICE_NAME...
“Thinking in AngularJS” if I have a jQuery background? [closed]
...
1. Don't design your page, and then change it with DOM manipulations
In jQuery, you design a page, and then you make it dynamic. This is because jQuery was designed for augmentation and has grown incredibly from that simple premise.
But in AngularJS, you...
Simulate CREATE DATABASE IF NOT EXISTS for PostgreSQL?
...)\gexec
The manual:
\gexec
Sends the current query buffer to the server, then treats each column of each row of the query's output (if any) as a SQL statement to be executed.
Workaround from the shell
With \gexec you only need to call psql once:
echo "SELECT 'CREATE DATABASE mydb' WHERE NOT EXIST...
Convert blob to base64
...elper function you should set a callback, example:
blobToBase64(blobData).then(res => {
// do what you wanna do
console.log(res); // res is base64 now
});
I write this helper function for my problem on React Native project, I wanted to download an image and then store it as a cached imag...
Move assignment operator and `if (this != &rhs)`
...oth clients is to build the fastest operations in at the lowest level, and then to add API on top of that for fuller features at more expense. I.e. you need the strong exception guarantee, fine, you pay for it. You don't need it? Here's a faster solution.
Let's get concrete: Here's the fast, ba...