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UPDATE multiple tables in MySQL using LEFT JOIN
...
UPDATE t1
LEFT JOIN
t2
ON t2.id = t1.id
SET t1.col1 = newvalue
WHERE t2.id IS NULL
Note that for a SELECT it would be more efficient to use NOT IN / NOT EXISTS syntax:
SELECT t1.*
FROM t1
WHERE t1.id NOT IN
(
SELECT id
FROM t2
)
S...
How to hide reference counts in VS2013?
Visual Studio 2013 introduced a new feature where it shows you how many times each of your methods are used.
5 Answers
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How can I pass data from Flask to JavaScript in a template?
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The ideal way to go about getting pretty much any Python object into a JavaScript object is to use JSON. JSON is great as a format for transfer between systems, but sometimes we forget that it stands for JavaScript Object Notatio...
get UTC time in PHP
...e instance and specifying a timezone to get the current time.
$date_utc = new \DateTime("now", new \DateTimeZone("UTC"));
echo $date_utc->format(\DateTime::RFC850); # Saturday, 18-Apr-15 03:23:46 UTC
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Popup弹出菜单扩展 · App Inventor 2 中文网
...项列表
make global MenuItemList from list
add "新建文件::new.png" to MenuItemList
add "打开文件::open.png::F" to MenuItemList
add "保存文件::save.png::T" to MenuItemList
add "退出程序::exit.png" to MenuItemList
// 设置新菜单
call Popup1.SetMenuIt...
Check if a dialog is displayed with Espresso
I'm trying to write some tests with the new android-test-kit (Espresso) . But I can't find any information on how to check if a dialog is displayed and perform some actions on it (like clicking the positive and negative buttons, e.t.c.). Note that a dialog may be also displayed by a WebView , no...
How can I remove a commit on GitHub? [duplicate]
...If you committed a password, change it! If you committed a key, generate a new one."
– Patrick
Aug 9 '13 at 7:54
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How to create directories recursively in ruby?
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Poping system command into sub-process is not the best idea. It's better to do it with the Ruby standard library to get error handling, check the result, etc.
– noraj
Oct 7 '19 at 21:31
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Measuring text height to be drawn on Canvas ( Android )
... getTextBounds. You can get the bounding rectangle like this
Rect bounds = new Rect();
mTextPaint.getTextBounds(mText, 0, mText.length(), bounds);
int height = bounds.height();
As you can see for the following images, different strings will give different heights (shown in red).
These differing he...
How to sign an android apk file
...ls?) - > export signed application (apk?)
Go through the wizard:
Make a new key-store. remember that password
Sign your app
Save it etc.
Also, from the link:
Compile and sign with Eclipse ADT
If you are using Eclipse with the ADT
plugin, you can use the Export Wizard
to export a si...