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App Inventor 2 代码调试方式：App调试、问题排查方法 · App Inventor 2 中文网
... App Inventor 2 代码调试方式：App调试、问题排查方法
App Inventor 2 调试方式
“标签”调试法
”预览代码块“调试功能
adb 调试：万能利器，...
I need to store postal codes in a database. How big should the column be?
...
Good link. Even allowing for the punctuation in US ZIP+4, 10 characters would be enough for any country as far as I could tell.
– Jonathan Leffler
Nov 28 '08 at 5:36
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NumberPicker 扩展：滑动选择数字，自定义样式 · App Inventor 2 中文网
...换 目录 在线 客服 扫码添加客服咨询 我要 分享 扫码分享到朋友圈 顶部 var qrcode = new QRCode("qrcode", { text: window.location.href + "?f=share", ...
Update Eclipse with Android development tools v. 23
...r22.6.2-linux.tgz
http://dl.google.com/android/android-sdk_r22.6.2-windows.zip
http://dl.google.com/android/android-sdk_r22.6.2-macosx.zip
and copy over the following files:
tools/hprof-conv
tools/support/annotations.jar
tools/proguard
So at the end if you started from a new ADT copy by hand...
Multiple Indexes vs Multi-Column Indexes
...reused.
e.g. imagine you search a table on three columns
state, county, zip.
you sometimes search by state only.
you sometimes search by state and county.
you frequently search by state, county, zip.
Then an index with state, county, zip. will be used in all three of these searches.
If yo...
SVN repository backup strategies
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You could use something like (Linux):
svnadmin dump repositorypath | gzip > backupname.svn.gz
Since Windows does not support GZip it is just:
svnadmin dump repositorypath > backupname.svn
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Executing a command stored in a variable from PowerShell
...r me. Assume
7z.exe is in the system path.
$cmd = '7z.exe'
$prm = 'a', '-tzip', 'c:\temp\with space\test1.zip', 'C:\TEMP\with space\changelog'
& $cmd $prm
If the command is known (7z.exe) and only parameters are variable then this will do
$prm = 'a', '-tzip', 'c:\temp\with space\test1.zip',...
How to view the contents of an Android APK file?
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Actually the apk file is just a zip archive, so you can try to rename the file to theappname.apk.zip and extract it with any zip utility (e.g. 7zip).
The androidmanifest.xml file and the resources will be extracted and can be viewed whereas the source code...
How to loop through all but the last item of a list?
... easiest way to compare the sequence item with the following:
for i, j in zip(a, a[1:]):
# compare i (the current) to j (the following)
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Resource interpreted as Document but transferred with MIME type application/zip
...d attribute in your <a> tag.
<a href="http://example.com/archive.zip" download>Export</a>
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/a#attr-download
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