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How do I clear all options in a dropdown box?
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This seems like a bad idea - setting the items to null is not the same as removing them.
– user1086498
Jun 4 '13 at 17:36
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How do you create different variable names while in a loop? [duplicate]
...it also "implicitly" creates global variables or modifies them. Since both setting and modifying variables this way requires dictionary notation, there is no reason to use globals() instead of some simple dict.
– Tadeck
Jul 10 '14 at 14:25
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String.format() to format double in java
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If you want to format it with manually set symbols, use this:
DecimalFormatSymbols decimalFormatSymbols = new DecimalFormatSymbols();
decimalFormatSymbols.setDecimalSeparator('.');
decimalFormatSymbols.setGroupingSeparator(',');
DecimalFormat decimalFormat = new ...
Convert String to Float in Swift
...number = numberFormatter.numberFromString(self.stringByTrimmingCharactersInSet(Wage.text))
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No Persistence provider for EntityManager named
...3.5 to 5.2.12 and this provider name change fixed the problem for me. That setting appears to allow JPA to use the core .jar file instead of the entity-manger .jar that shows as deprecated on the Maven central repository. Thanks so much for sharing.
– joshpt
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How to sum all column values in multi-dimensional array?
How can I add all the columnar values by associative key? Note that key sets are dynamic.
20 Answers
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How to query MongoDB with “like”?
...nly "name" field in a table named "users", you may use project() method by setting values of fields that you want to 1. Fields which are not mentioned in project() will not be fetched except _id. _id field is printed by default which you may suppress by putting 0 value for _id inside project() metho...
Shell script to send email [duplicate]
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Where can I find the preset tutorial for this command? As to execute this command, I need to configure something.
– Zen
Sep 6 '14 at 2:43
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Render a string in HTML and preserve spaces and linebreaks
...user's input (or play with regular expressions) to only allow a predefined set of tags.
For instance, allow
<p>, <span>, <strong>
... but don't allow
<script> or <iframe>
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Print current call stack from a method in Python code
...import pdb
Then in the code where you want to see what is happening
pdb.set_trace()
and you get dropped into a prompt
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