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How do I convert a PDF document to a preview image in PHP? [closed]
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@think123 use $im->thumbnailImage(1500, 0); That will set your jpg image to a width of 1500 and retain scale. See documentation
– Kevin Jantzer
Jan 21 '14 at 17:37
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Emulate a do-while loop in Python?
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yes. and add more fun by renaming condition to do throughout so that the second line reads while do: :D
– SpeedCoder5
Aug 6 '18 at 17:38
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In Typescript, How to check if a string is Numeric
...y to convert a string to a number is with Number, not parseFloat.
Number('1234') // 1234
Number('9BX9') // NaN
You can also use the unary plus operator if you like shorthand:
+'1234' // 1234
+'9BX9' // NaN
Be careful when checking against NaN (the operator === and !== don't work as expected wi...
Is it possible to have a multi-line comments in R? [duplicate]
...k another time ` # if(FALSE){ ` and ` # } `
– Gabriel123
Sep 6 '17 at 11:20
add a comment
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Centering floating divs within another div
...rizontal */
and the floated children get aligned center (DEMO)
Just for fun, to get vertical alignment as well just add:
align-items: center; /* align vertical */
DEMO
share
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improve this ans...
How to call Base Class's __init__ method from the child class? [duplicate]
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123
You could use super(ChildClass, self).__init__()
class BaseClass(object):
def __init__(se...
Google Tag Manager 入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...Of(“/jp/”) == 0) { … }
通配符，如：文章的地址：/article_123：
If (/article_\d+/.test(a)) { … } // 这儿用正则表达式来匹配末尾的数字。
实际的匹配条件会有很多种，这对于没有代码基础的网站分析人员可真是一种挑战啊，另外写...
How do I delete all messages from a single queue using the CLI?
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123
rabbitmqadmin is the perfect tool for this
rabbitmqadmin purge queue name=name_of_the_queue_t...
How to remove a field completely from a MongoDB document?
... looks like this:
{
name: 'book',
tags: [
{
words: ['abc','123'],
lat: 33,
long: 22
}, {
words: ['def','456'],
lat: 44,
long: 33
}
]
}
To remove the column words from the embedded document, do this:
db.example.update(
{'tags': {'$exists':...
How can I change the color of my prompt in zsh (different from normal text)?
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not working for me. :( zsh: colors: function definition file not found
– balki
Sep 8 '11 at 4:20
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