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Create table in SQLite only if it doesn't exist already
...bles with the name
tablename = 'KABOOM'
cursor.execute("SELECT count(name) FROM sqlite_master WHERE type='table' AND name=? ", (tablename, ))
print(cursor.fetchone()) # this SHOULD BE in a tuple containing count(name) integer.
# check if the db has existing table...
How to make/get a multi size .ico file? [closed]
...ultiple icon ico file for free.
Drag & drop the different icon sizes, select them all and choose file -> create multiple icon.
You can download if from http://www.towofu.net/soft/e-aicon.php
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Mark current Line, and navigate through marked lines
...ft+f2"], "command": "clear_bookmarks" },
{ "keys": ["alt+f2"], "command": "select_all_bookmarks" },
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Python: Get relative path from comparing two absolute paths
...PurePath.parents()), taking the intersection of all these parent sets, and selecting the longest common prefix.
PPPPPS: Python 3.5 introduced a proper solution to this question: os.path.commonpath(), which returns a valid path.
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Remove columns from DataTable in C#
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Aside from limiting the columns selected to reduce bandwidth and memory:
DataTable t;
t.Columns.Remove("columnName");
t.Columns.RemoveAt(columnIndex);
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How do I find files with a path length greater than 260 characters in Windows?
...$outputFilePath, $false)
Get-ChildItem -Path $pathToScan -Recurse -Force | Select-Object -Property FullName, @{Name="FullNameLength";Expression={($_.FullName.Length)}} | Sort-Object -Property FullNameLength -Descending | ForEach-Object {
$filePath = $_.FullName
$length = $_.FullNameLength
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Catch multiple exceptions in one line (except block)
...e variable if you have long exception handling or your IDE only highlights selections larger than that, as mine does.) The instance has an args attribute. Here is an example:
import sys
try:
mainstuff()
except (KeyboardInterrupt, EOFError) as err:
print(err)
print(err.args)
sys.ex...
RESTful way to create multiple items in one request
..., either in read-only or editable fashion. For instance, a user is able to select and POST multiple images to a gallery using a form comprising only a single file input. If the POST request succeeds in its entirety the user is presented with a set of forms for each image resource representation crea...
Hidden Features of C++? [closed]
... It's also useful as a way to switch between implementations, whether selecting say thread-safe versus non-thread-safe, or version 1 versus 2.
– Tony Delroy
Jan 24 '11 at 10:22
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What are the differences between numpy arrays and matrices? Which one should I use?
...nces between matrix objects and ndarrays
(having to do with np.ravel, item selection and sequence behavior).
The main advantage of numpy arrays is that they are more general than
2-dimensional matrices. What happens when you want a 3-dimensional array? Then
you have to use an ndarray, not a matrix ...