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MySQL pagination without double-querying?
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On complex queries, using SQL_CALC_FOUND_ROWS to fetch the count in the same query will almost always be slower than doing two separate queries. This is because it means all rows will need to be retrieved in full, regardless of...
Accessing dict_keys element by index in Python3
... @BrandonBradley: thanks for the link. Only the solution from one of the comments for that blog works for me in Python3: sorted(dict.keys()). In Python2, dict.keys() will return a list of key values.
– Good Will
May 8 '18 at 22:20
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How to export collection to CSV in MongoDB?
...-csv --out text.csv --fields firstName,middleName,lastName
UPDATE:
This commit: https://github.com/mongodb/mongo-tools/commit/586c00ef09c32c77907bd20d722049ed23065398 fixes the docs for 3.0.0-rc10 and later. It changes
Fields string `long:"fields" short:"f" description:"comma separated list of f...
How to differentiate between time to live and time to idle in ehcache
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In the comment above when you say that "Let's say that timeToIdleSeconds = 3. Object will be invalidated if it hasn't been requested for 4 seconds.", when you say invalidate - what does it mean? Does it remove it from heap? If the ...
SQLite INSERT - ON DUPLICATE KEY UPDATE (UPSERT)
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Change date of git tag (or GitHub Release based on it)
I'm adding Releases to my projects on GitHub by adding tags to various commits in the Main branch.
3 Answers
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How do I parse JSON with Objective-C?
...ective of the OS X v10.7 and iOS 5 launches, probably the first thing to recommend now is NSJSONSerialization, Apple's supplied JSON parser. Use third-party options only as a fallback if you find that class unavailable at runtime.
So, for example:
NSData *returnedData = ...JSON data, probably from...
GPU Emulator for CUDA programming without the hardware [closed]
...s in the /usr/local/cuda/bin/.
It turned out that I had difficulties with compiling it:
NOTE: device emulation mode is deprecated in this release
and will be removed in a future release.
/usr/include/i386-linux-gnu/bits/byteswap.h(47): error: identifier "__builtin_bswap32" is undefined
/u...
Python Logging (function name, file name, line number) using a single file
...rying to learn how an application works. And for this I am inserting debug commands as the first line of each function's body with the goal of logging the function's name as well as the line number (within the code) where I send a message to the log output. Finally, since this application comprises ...
What is the correct format to use for Date/Time in an XML file
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