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Convert SQLITE SQL dump file to POSTGRESQL
...made constraint such as this:
CREATE TABLE tablename (
...
unsigned_column_name integer CHECK (unsigned_column_name > 0)
);
While SQLite defaults null values to '', PostgreSQL requires them to be set as NULL.
The syntax in the SQLite dump file appears to be mostly compatible with Postgre...
mysql check collation of a table
...luding the collation.
For example SHOW TABLE STATUS where name like 'TABLE_NAME'
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Grab a segment of an array in Java without creating a new array on heap
... that ByteBuffer objects can be fairly easily decoded: StandardCharsets.UTF_8.decode(ByteBuffer.wrap(buffer, 0, readBytes))
– skeryl
Dec 28 '15 at 21:15
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pandas: multiple conditions while indexing data frame - unexpected behavior
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You can use query(), i.e.:
df_filtered = df.query('a == 4 & b != 2')
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How to define an enumerated type (enum) in C?
...one like this:
enum strategy {RANDOM, IMMEDIATE, SEARCH};
enum strategy my_strategy = IMMEDIATE;
However, you can use a typedef to shorten the variable declarations, like so:
typedef enum {RANDOM, IMMEDIATE, SEARCH} strategy;
strategy my_strategy = IMMEDIATE;
Having a naming convention to dist...
Where can I set environment variables that crontab will use?
...ng every hour. The user running it has environment variabless in the .bash_profile that work when the user runs the job from the terminal, however, obviously these don't get picked up by crontab when it runs.
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Difference between this and self in self-type annotations?
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btw you can also do _: B => for the non-alias case for simplicity
– Creos
Jun 19 '19 at 17:29
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Is it possible to make anonymous inner classes in Java static?
... implementation dependent: this code prints true using javac (sun-jdk-1.7.0_10) and false using Eclipse compiler.
– Paul Bellora
Apr 18 '13 at 14:19
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Using capistrano to deploy from different git branches
...S, orelse the argument would not pass through to cap, when using fetch(:var_name, 'default') to get it.
– Frederik Struck-Schøning
Jan 23 '14 at 10:14
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Xcode suddenly stopped running project on hardware: “Could not launch xxx.app: .. No such file..” [c
... How in the world it got changed is beyond me.
– karl_
Dec 6 '12 at 18:04
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Yeah it solved my pro...