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App Inventor 2 软件著作权（软著）申请指南 · App Inventor 2 中文网
...是否收费？
一般来说，找第三方的话，收费约600~1200元，但是，请注意，完全可以由自己来完成，期间完全免费！而且难度不大，通过率比较高。
不过第一次没有申请经验的，建议找人代理一下，细节还是很多很繁...
Pandas groupby: How to get a union of strings
...found this .agg suggestion to be much faster than .apply. For a dataset of 600k+ text strings, I got identical results 5-10x faster.
– Doubledown
Sep 12 '19 at 0:00
add a comm...
AngularJS ngClass conditional
...
600
Your first attempt was almost right, It should work without the quotes.
{test: obj.value1 == ...
Convert PEM to PPK file format
...oing to connect.
Make sure permissions on .PEM file are appropriate (chmod 600 file.pem)
Connect with ssh command: ssh vcloud@ipaddress –i privkey.pem
Putty (Windows)
Download Putty and puttygen from - here
Use puttygen to convert .PEM file to .PPK file.
Start puttygen and select “Load”
Sel...
Git keeps asking me for my ssh key passphrase
...-agent | sed 's/^echo/#echo/' > ${SSH_ENV}
echo succeeded
chmod 600 ${SSH_ENV}
. ${SSH_ENV} > /dev/null
/usr/bin/ssh-add
}
if [ -f "${SSH_ENV}" ]; then
. ${SSH_ENV} > /dev/null
ps -ef | grep ${SSH_AGENT_PID} | grep ssh-agent$ > /dev/null || {
start_agen...
CSS: center element within a element
...xt-align:center;
background-color:blue;
height:400px;
width:600px;
}
.block {
height:100px;
width:200px;
text-align:left;
}
.center {
margin:auto;
background-color:green;
}
.left {
margin:auto auto auto 0;
background-color:red;
}
.right {
...
Composer killed while updating
...ev/zero of=swapfile bs=1M count=2000
mkswap swapfile
swapon swapfile
chmod 600 swapfile
#Automatically mount this swap partition at startup
echo "/var/_swap_/swapfile none swap sw 0 0" >> /etc/fstab
#Check free memory after
free -m
As several comments pointed out, don't forget to add sudo if...
Shell one liner to prepend to a file
...;3) seems to overcome the read/write on same file dilemma. Works for me on 600K files with awk. However trying the same trick using 'cat' fails.
Passing the prependage as a variable to awk (-v TEXT="$text") overcomes the literal quotes problem which prevents doing this trick with 'sed'.
#!/bin/bas...
How to iterate over a JavaScript object?
...ourobject[keys[i]] :
for (let i=300; i < keys.length && i < 600; i++) {
console.log(keys[i], yourobject[keys[i]]);
}
share
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Android, canvas: How do I clear (delete contents of) a canvas (= bitmaps), living in a surfaceView?
...wWelcomeScreen
android:id="@+id/one"
android:layout_width="600px"
android:layout_height="312px"
android:layout_gravity="center"
android:layout_marginTop="10px"
android:background="@drawable/welcome" />
try above code...
...