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What does it mean by select 1 from table?
...ere a circumstantially compelling reason not to).
EDIT
There actually is one case which I forgot about until just now. In the case where you are trying to determine existence of a value in the database from an outside language, sometimes SELECT 1 FROM TABLE_NAME will be used. This does not offer s...
How do you sign a Certificate Signing Request with your Certification Authority?
... (a.k.a server or user). Both of the two commands elide the two steps into one. And both assume you have a an OpenSSL configuration file already setup for both CAs and Server (end entity) certificates.
First, create a basic configuration file:
$ touch openssl-ca.cnf
Then, add the following to ...
How to change title of Activity in Android?
...he launcher activity will also change the name of the application on the phone's applications screen. Your application's icon will have "My Activity Title" caption.
– Doron Zehavi
Apr 7 '14 at 11:58
...
Runtime vs. Compile time
...example of what pointy-headed theorists call the phase distinction. It is one of the hardest concepts to learn, especially for people without much background in programming languages. To approach this problem, I find it helpful to ask
What invariants does the program satisfy?
What can go wrong i...
Extracting extension from filename in Python
...
@Vingtoft You mentioned nothing about werkzeug's FileStorage in your comment and this question has nothing about that particular scenario. Something might be wrong with how you are passed the filename. os.path.splitext('somefile.ext') => ('s...
How to add spacing between UITableViewCell
...
Nice solution. In case anyone has issues, I had to call super.layoutSubviews() first to ensure the entire view was properly laid out prior to setting its frame.
– ruttopia
Dec 14 '16 at 21:51
...
Update MongoDB field using value of another field
... allows using of aggregation pipeline in the update document and the updateOne, updateMany or update collection method. Note that the latter has been deprecated in most if not all languages drivers.
MongoDB 4.2+
Version 4.2 also introduced the $set pipeline stage operator which is an alias for $a...
How to add directory to classpath in an application run profile in IntelliJ IDEA?
...rations with two different directories that must be exclusively present in one but not the other. In eclipse you can add/remove anything to a launch configuration. Does IntelliJ not support this?
– Καrτhικ
Dec 9 '14 at 16:52
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How can I get the behavior of GNU's readlink -f on a Mac?
...LE`
cd `dirname $TARGET_FILE`
TARGET_FILE=`basename $TARGET_FILE`
done
# Compute the canonicalized name by finding the physical path
# for the directory we're in and appending the target file.
PHYS_DIR=`pwd -P`
RESULT=$PHYS_DIR/$TARGET_FILE
echo $RESULT
Note that this doesn't include any...
Can't specify the 'async' modifier on the 'Main' method of a console app
...ell for Console programs: Main returns to the OS - so your program exits.
One solution is to provide your own context - a "main loop" for your console program that is async-compatible.
If you have a machine with the Async CTP, you can use GeneralThreadAffineContext from My Documents\Microsoft Visua...