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Remove characters except digits from string using Python?
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convert str to list to make sure it works on both py2 and py3: ''.join(filter(lambda x: x.isdigit(), list("dasdasd2313dsa")))
– Luiz C.
Feb 9 '17 at 18:25
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Automatically start a Windows Service on install
...d for cases where you need to be able to perform other processing (e.g. to select which service).
PowerShell: execute Start-Service via RunspaceInvoke or by creating your own Runspace and using its CreatePipeline method to execute. This is good for cases where you need to be able to perform other pr...
How to split data into training/testing sets using sample function
...101) # Set Seed so that same sample can be reproduced in future also
# Now Selecting 75% of data as sample from total 'n' rows of the data
sample <- sample.int(n = nrow(data), size = floor(.75*nrow(data)), replace = F)
train <- data[sample, ]
test <- data[-sample, ]
By using caTools pa...
How to center a checkbox in a table cell?
... myTextEditBox
</td>
<td>
<select size ="1" name="myTextEditBox_compare_operator">
<option value="=">equals</option>
<option value="<>">does not equal</option>
</select>
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How to create a simple map using JavaScript/JQuery [duplicate]
...the .toString of the key Objects, when storing and retrieving the entries, convert the objects to a string which represents your understanding of uniqueness. E.g. map[toUniqueString(key1)] = 1
Sometimes, though, that is not possible. If you want to map data based on, for example File objects, ther...
How to use PyCharm to debug Scrapy projects
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As of 2018.1 this became a lot easier. You can now select Module name in your project's Run/Debug Configuration. Set this to scrapy.cmdline and the Working directory to the root dir of the scrapy project (the one with settings.py in it).
Like so:
Now you can add breakpoin...
Any way to declare an array in-line?
...shortArrayOf()
byteArrayOf()
If you already have a Collection and wish to convert it to an array inline, simply use:
collection.toTypedArray()
If you need to coerce an array type, use:
array.toIntArray()
array.toLongArray()
array.toCharArray()
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How to “crop” a rectangular image into a square with CSS?
...ikely SASS/SCSS - If you're using straight CSS, this post tells you how to convert: stackoverflow.com/questions/26760776/…
– Steve Allday
Sep 12 at 23:28
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Reorder / reset auto increment primary key
...riable, this is okay: SET @a = @a + 1; For other statements, such as SELECT, you might get the results you expect, but this is not guaranteed. In the following statement, you might think that MySQL will evaluate @a first and then do an assignment second: SELECT @a, @a:=@a+1, ...; However...
How to find if an array contains a specific string in JavaScript/jQuery? [duplicate]
...ermalink;. Using post.categories returns this error in console.log: "can't convert null to object".
– Cofey
May 24 '11 at 20:41
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