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Create a custom callback in JavaScript
All I need to do is to execute a callback function when my current function execution ends.
10 Answers
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How can I write text on a HTML5 canvas element?
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Here the demo for this, and you can try your self for any modification: http://okeschool.com/examples/canvas/html5-canvas-text-color
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SVN needs-lock 设置强制只读属性（官方资料） - 环境配置 - 清泛IT论坛，...
Automatic lock-modify-unlock
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Different versions of binary files cannot be merged. Therefore versioning of binary files should follow the lock-modify-unlock model[1]. This setup uses the following three measuresforces users to use property svn:...
Embedding SVG into ReactJS
...;svg
width="100%"
height="100%"
xmlns="http://www.w3.org/2000/svg"
xmlnsXlink="http://www.w3.org/1999/xlink"
>
<style>
{ `.classA { fill:${props.fill} }` }
</style>
<defs>...
psycopg2: insert multiple rows with one query
I need to insert multiple rows with one query (number of rows is not constant), so I need to execute query like this one:
1...
How to pass the password to su/sudo/ssh without overriding the TTY?
... setuiding a helper app that performs the task requiring superuser access:
http://en.wikipedia.org/wiki/Setuid
Sudo is not meant to be used offline.
Later edit: SSH can be used with private-public key authentication. If the private key does not have a passphrase, ssh can be used without prompting ...
Maximum single-sell profit
Suppose we are given an array of n integers representing stock prices on a single day. We want to find a pair (buyDay, sellDay) , with buyDay ≤ sellDay , such that if we bought the stock on buyDay and sold it on sellDay , we would maximize our profit.
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How to set child process' environment variable in Makefile
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How to use the 'sweep' function
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Declare a constant array
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