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SLF4J: Failed to load class “org.slf4j.impl.StaticLoggerBinder”. error

...lipse, instead of it's embedded maven. That is done in three steps: 1 Install maven on local machine (the test-machine was Ubuntu 10.10) mvn --version Apache Maven 2.2.1 (rdebian-4) Java version: 1.6.0_20 Java home: /usr/lib/jvm/java-6-openjdk/jre Default locale: de_DE, platform encoding: UTF-8 OS...
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How to replace a character by a newline in Vim

...s a newline (more precisely, it’s treated as the input CR). Here’s a small, non-interactive example to illustrate this, using the Vim command line feature (in other words, you can copy and paste the following into a terminal to run it). xxd shows a hexdump of the resulting file. echo bar > te...
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How to read a line from the console in C?

...ters it read. So you use fgetc: char * getline(void) { char * line = malloc(100), * linep = line; size_t lenmax = 100, len = lenmax; int c; if(line == NULL) return NULL; for(;;) { c = fgetc(stdin); if(c == EOF) break; if(--len == 0)...
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How to add multiple columns to a table in Postgres?

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Maximum single-sell profit

...oblem in each subarray, then combining the two together. Turns out we actually can do this, and can do so efficiently! The intuition is as follows. If we have a single day, the best option is to buy on that day and then sell it back on the same day for no profit. Otherwise, split the array into ...
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How to read from a file or STDIN in Bash?

... The following solution reads from a file if the script is called with a file name as the first parameter $1 otherwise from standard input. while read line do echo "$line" done < "${1:-/dev/stdin}" The substitution ${1:-...} takes $1 if defined otherwise the file name of t...
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MySQL COUNT DISTINCT

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What's the “average” requests per second for a production web application?

... second vs. requests per second. I think requests/second is in that same ballpark(100 to 200) but with streaming it shoots up to 1140 records / second (doing ndjson). Anyways thought I would share more numbers. (not sure if this will change as that was tested streamed through 2 microservices into...
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Compiler error: memset was not declared in this scope

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AngularJS browser autofill workaround by using a directive

...user's input. Also, 3 seconds is probably too long. You shouldn't have to call $apply() in a $timeout, BTW, it should queue a $digest for you automatically. The real catch: Will your browser beat Angular to execution? What about my browser? This is probably an unwinnable war, which is why Angular ...