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How to replace ${} placeholders in a text file?
...t to pipe the output of a "template" file into MySQL, the file having variables like ${dbName} interspersed. What is the command line utility to replace these instances and dump the output to standard output?
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git ignore all files of a certain type, except those in a specific subfolder
... optional prefix ! which negates the
pattern; any matching file excluded by
a previous pattern will become
included again. If a negated pattern
matches, this will override lower
precedence patterns sources.
http://schacon.github.com/git/gitignore.html
*.json
!spec/*.json
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Why is ArrayDeque better than LinkedList
I am trying to to understand why Java's ArrayDeque is better than Java's LinkedList as they both implement Deque interface.
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Can I hex edit a file in Visual Studio?
I want to edit a binary file, but I don't want to use another tool other than Visual Studio because it's a pain to switch back and forth.
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Java List.contains(Object with field value equal to x)
I want to check whether a List contains an object that has a field with a certain value. Now, I could use a loop to go through and check, but I was curious if there was anything more code efficient.
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Oracle TNS names not showing when adding new connection to SQL Developer
I'm trying to connect to an oracle database with SQL Developer.
7 Answers
7
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Does VBA have Dictionary Structure?
Does VBA have dictionary structure? Like keyvalue array?
9 Answers
9
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Getting a list of values from a list of dicts
... (assuming your list is named l)
[d['value'] for d in l]
If value might be missing, you can use
[d['value'] for d in l if 'value' in d]
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Is there any performance gain in indexing a boolean field?
I'm just about to write a query that includes a WHERE isok=1 . As the name implies, isok is a boolean field (actually a TINYINT(1) UNSIGNED that is set to 0 or 1 as needed).
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How do I generate random number for each row in a TSQL Select?
I need a different random number for each row in my table. The following seemingly obvious code uses the same random value for each row.
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