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javac : command not found
...led the Java Runtime Environment (JRE) only, which does not contain javac. For javac, you have to install the OpenJDK Development Environment. You can install java-devel or java-1.6.0-openjdk-devel, which both include javac.
By the way: you can find out which package provides javac with a yum searc...
Why do we always prefer using parameters in SQL statements?
... SELECT , UPDATE , DELETE , and INSERT commands. But I have seen many forums where we prefer to write:
7 Answers
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How can I safely encode a string in Java to use as a filename?
...g s = ...
int len = s.length();
StringBuilder sb = new StringBuilder(len);
for (int i = 0; i < len; i++) {
char ch = s.charAt(i);
if (ch < ' ' || ch >= 0x7F || ch == fileSep || ... // add other illegal chars
|| (ch == '.' && i == 0) // we don't want to collide with "...
How can I force Powershell to return an array when a call only returns one object?
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@Deadly-Bagel Can you show example of this? For me @(...) work properly (produce result I expect it should produce) for any types of objects.
– user4003407
Jun 17 '16 at 7:44
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How to set custom header in Volley Request
How can custom headers be set for a Volley request? At the moment, there is way to set body content for a POST request. I've a simple GET request, but I need to pass the custom headers alongwith. I don't see how JsonRequest class supports it. Is it possible at all?
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Relational table naming convention [closed]
...ect and would like to get my table- and column names right from the start. For example I've always used plural in table names but recently learned singular is correct.
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logger configuration to log to file and print to stdout
...ger().addHandler(logging.StreamHandler(sys.stdout))
You could also add a Formatter to it so all your log lines have a common header.
ie:
import logging
logFormatter = logging.Formatter("%(asctime)s [%(threadName)-12.12s] [%(levelname)-5.5s] %(message)s")
rootLogger = logging.getLogger()
fileHa...
How do I filter query objects by date range in Django?
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for date__range you need to put 01 of the next month. Here is a link to the documentaion that exmaplins that it translates to 00:00:00.0000 of the dates, hence the last day in your range is not included. docs.djangoproject.co...
What is the Python equivalent of Matlab's tic and toc functions?
...ople have been using the unix time command to measure runtimes of programs for ever, and this method replicates this inside Python code. I see nothing wrong with it, as long as it's the right tool for the job. timeit isn't always that, and a profiler is a much more heavyweight solution for most need...
How to return a value from __init__ in Python?
...ust because it can't be done doesn't mean it doesn't make sense. It would, for instance, be nice to pass data from super().__init__ to the derived class without having to relay it through an instance variable.
– c z
Mar 28 '18 at 15:06
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