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How do you query for “is not null” in Mongo?
...: "http://example.com/foo.png" }
{ "_id" : ObjectId("544540c91b5cf91c4893eb97"), "imageUrl" : "http://example.com/bar.png" }
{ "_id" : ObjectId("544540ed1b5cf91c4893eb98"), "otherField" : 1 }
{ "_id" : ObjectId("544540f11b5cf91c4893eb99"), "otherField" : 2 }
Now, create the sparse index on imageUr...
Databinding an enum property to a ComboBox in WPF
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I prefer not to use the name of enum in UI. I prefer use different value for user (DisplayMembe...
When should I use Struct vs. OpenStruct?
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with ruby 2.14 the difference is smaller 0.94-0.97 with OpenStruct vs 0.02-0.03 with Ostruct (MB Pro 2.2Ghz i7)
– basex
Mar 23 '15 at 17:06
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How to print colored text in Python?
...e code from the answer: It should be noted that the colors in the range 90-97 and 100-107 are non-standard and, indeed, on my terminal they don't all give the colors indicated by the variable names. It's better to use the standard ranges 30-37 and 40-47. Source: en.wikipedia.org/wiki/…
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Keep only first n characters in a string?
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KooiIncKooiInc
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Writing to an Excel spreadsheet
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97
import xlwt
def output(filename, sheet, list1, list2, x, y, z):
book = xlwt.Workbook()
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Remove non-utf8 characters from string
...from string, which are not displaying properly. Characters are like this 0x97 0x61 0x6C 0x6F (hex representation)
18 Answer...
Twitter Bootstrap - add top space between rows
...tstrap 4: github.com/twbs/bootstrap/issues/4286
– icc97
Jan 8 '16 at 19:02
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All I learned from t...
C-like structures in Python
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RotaretiRotareti
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ContinuousSpeech 连续语音识别扩展：持续语音识别无需重复启动 · App Inventor 2 中文网
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